MX lookup results different depending on client application zookster[ at ]gmail.com 6/5/2007 6:51:51 PM When our mail server performs an MX lookup on humphreygasproducts.com (which is done during the STMP conversation with their sending mail server when they send us a message) our internal Windows 2003 (5.2 Build 3790.srv03_sp1_gdr.070304-2232) DNS server returns a "non- existant domain" reply. If I perform an nslookup on the mx record while at the console on the mail server, it returns the MX record just fine. I've tried flushing the DNS cache on the mail server, and clearing the cache in the DNS server. I've also checked the humphreygasproducts.com domain on www.checkdns.net Any thoughts or help is greatly appreciated. Below is the debug log showing the mail server request and the DNS server negative reply. 20070605 11:42:15 E4C PACKET UDP Rcv 192.168.0.2 1dc3 Q [0001 D NOERROR] (19)humphreygasproducts(3)com(0) UDP question info at 022B4F50 Socket = 488 Remote addr 192.168.0.2, port 2929 Time Query=13868, Queued=0, Expire=0 Buf length = 0x0500 (1280) Msg length = 0x0029 (41) Message: XID 0x1dc3 Flags 0x0100 QR 0 (QUESTION) OPCODE 0 (QUERY) AA 0 TC 0 RD 1 RA 0 Z 0 RCODE 0 (NOERROR) QCOUNT 1 ACOUNT 0 NSCOUNT 0 ARCOUNT 0 QUESTION SECTION: Offset = 0x000c, RR count = 0 Name "(19)humphreygasproducts(3)com(0)" QTYPE MX (15) QCLASS 1 ANSWER SECTION: empty AUTHORITY SECTION: empty ADDITIONAL SECTION: empty 20070605 11:42:15 E4C PACKET UDP Snd 192.168.0.2 1dc3 R Q [8381 DR NXDOMAIN] (19)humphreygasproducts(3)com(0) UDP response info at 022B4F50 Socket = 488 Remote addr 192.168.0.2, port 2929 Time Query=13868, Queued=0, Expire=0 Buf length = 0x0200 (512) Msg length = 0x0029 (41) Message: XID 0x1dc3 Flags 0x8183 QR 1 (RESPONSE) OPCODE 0 (QUERY) AA 0 TC 0 RD 1 RA 1 Z 0 RCODE 3 (NXDOMAIN) QCOUNT 1 ACOUNT 0 NSCOUNT 0 ARCOUNT 0 QUESTION SECTION: Offset = 0x000c, RR count = 0 Name "(19)humphreygasproducts(3)com(0)" QTYPE MX (15) QCLASS 1 ANSWER SECTION: empty AUTHORITY SECTION: empty ADDITIONAL SECTION: empty ------------------ Below is the nslookup request and reply. 20070605 11:45:47 E4C PACKET UDP Rcv 192.168.0.2 1e3d Q [0001 D NOERROR] (19)humphreygasproducts(3)com(0) UDP question info at 023194E0 Socket = 488 Remote addr 192.168.0.2, port 3069 Time Query=14080, Queued=0, Expire=0 Buf length = 0x0500 (1280) Msg length = 0x0029 (41) Message: XID 0x1e3d Flags 0x0100 QR 0 (QUESTION) OPCODE 0 (QUERY) AA 0 TC 0 RD 1 RA 0 Z 0 RCODE 0 (NOERROR) QCOUNT 1 ACOUNT 0 NSCOUNT 0 ARCOUNT 0 QUESTION SECTION: Offset = 0x000c, RR count = 0 Name "(19)humphreygasproducts(3)com(0)" QTYPE MX (15) QCLASS 1 ANSWER SECTION: empty AUTHORITY SECTION: empty ADDITIONAL SECTION: empty 20070605 11:45:47 E4C PACKET UDP Snd 192.168.0.2 1e3d R Q [8081 DR NOERROR] (19)humphreygasproducts(3)com(0) UDP response info at 023194E0 Socket = 488 Remote addr 192.168.0.2, port 3069 Time Query=14080, Queued=0, Expire=0 Buf length = 0x0200 (512) Msg length = 0x0055 (85) Message: XID 0x1e3d Flags 0x8180 QR 1 (RESPONSE) OPCODE 0 (QUERY) AA 0 TC 0 RD 1 RA 1 Z 0 RCODE 0 (NOERROR) QCOUNT 1 ACOUNT 1 NSCOUNT 0 ARCOUNT 1 QUESTION SECTION: Offset = 0x000c, RR count = 0 Name "(19)humphreygasproducts(3)com(0)" QTYPE MX (15) QCLASS 1 ANSWER SECTION: Offset = 0x0029, RR count = 0 Name "[C00C](19)humphreygasproducts(3)com(0)" TYPE MX (15) CLASS 1 TTL 3567 DLEN 16 DATA 10 (2)mx(8)valueweb[C020](3)com(0) AUTHORITY SECTION: empty ADDITIONAL SECTION: Offset = 0x0045, RR count = 0 Name "[C037](2)mx(8)valueweb[C020](3)com(0)" TYPE A (1) CLASS 1 TTL 267 DLEN 4 DATA 216.219.253.196

Re: MX lookup results different depending on client application "Jeremy" <jeremy[ at ]discussions.microsoft.com> 6/7/2007 9:42:55 AM This is the output from an nslookup for your MX record: ---- D:\downloads>nslookup Default Server: dns1.tpgi.com.au Address: 203.12.160.35:53 [Quoted Text] > set type=mx > humphreygasproducts.com Server: dns1.tpgi.com.au Address: 203.12.160.35:53 Non-authoritative answer: humphreygasproducts.com MX preference = 10, mail exchanger = mx.valueweb.com humphreygasproducts.com nameserver = dns3.valueweb.com humphreygasproducts.com nameserver = dns1.valueweb.com humphreygasproducts.com nameserver = dns2.valueweb.com mx.valueweb.com internet address = 216.219.253.196 > ----- Can you please post the ipconfig /all output of both the non working server and from the Exchange server and then the output of this nslookup query above from both too. Cheers, Jeremy. <zookster[ at ]gmail.com> wrote in message news:1181069511.915087.37730[ at ]p77g2000hsh.googlegroups.com... > When our mail server performs an MX lookup on humphreygasproducts.com > (which is done during the STMP conversation with their sending mail > server when they send us a message) our internal Windows 2003 (5.2 > Build 3790.srv03_sp1_gdr.070304-2232) DNS server returns a "non- > existant domain" reply. If I perform an nslookup on the mx record > while at the console on the mail server, it returns the MX record just > fine. > > I've tried flushing the DNS cache on the mail server, and clearing the > cache in the DNS server. I've also checked the > humphreygasproducts.com domain on www.checkdns.net > > Any thoughts or help is greatly appreciated. > > Below is the debug log showing the mail server request and the DNS > server negative reply. > > 20070605 11:42:15 E4C PACKET UDP Rcv 192.168.0.2 1dc3 Q [0001 > D NOERROR] (19)humphreygasproducts(3)com(0) > UDP question info at 022B4F50 > Socket = 488 > Remote addr 192.168.0.2, port 2929 > Time Query=13868, Queued=0, Expire=0 > Buf length = 0x0500 (1280) > Msg length = 0x0029 (41) > Message: > XID 0x1dc3 > Flags 0x0100 > QR 0 (QUESTION) > OPCODE 0 (QUERY) > AA 0 > TC 0 > RD 1 > RA 0 > Z 0 > RCODE 0 (NOERROR) > QCOUNT 1 > ACOUNT 0 > NSCOUNT 0 > ARCOUNT 0 > QUESTION SECTION: > Offset = 0x000c, RR count = 0 > Name "(19)humphreygasproducts(3)com(0)" > QTYPE MX (15) > QCLASS 1 > ANSWER SECTION: > empty > AUTHORITY SECTION: > empty > ADDITIONAL SECTION: > empty > > 20070605 11:42:15 E4C PACKET UDP Snd 192.168.0.2 1dc3 R Q [8381 > DR NXDOMAIN] (19)humphreygasproducts(3)com(0) > UDP response info at 022B4F50 > Socket = 488 > Remote addr 192.168.0.2, port 2929 > Time Query=13868, Queued=0, Expire=0 > Buf length = 0x0200 (512) > Msg length = 0x0029 (41) > Message: > XID 0x1dc3 > Flags 0x8183 > QR 1 (RESPONSE) > OPCODE 0 (QUERY) > AA 0 > TC 0 > RD 1 > RA 1 > Z 0 > RCODE 3 (NXDOMAIN) > QCOUNT 1 > ACOUNT 0 > NSCOUNT 0 > ARCOUNT 0 > QUESTION SECTION: > Offset = 0x000c, RR count = 0 > Name "(19)humphreygasproducts(3)com(0)" > QTYPE MX (15) > QCLASS 1 > ANSWER SECTION: > empty > AUTHORITY SECTION: > empty > ADDITIONAL SECTION: > empty > > ------------------ > > Below is the nslookup request and reply. > > 20070605 11:45:47 E4C PACKET UDP Rcv 192.168.0.2 1e3d Q [0001 > D NOERROR] (19)humphreygasproducts(3)com(0) > UDP question info at 023194E0 > Socket = 488 > Remote addr 192.168.0.2, port 3069 > Time Query=14080, Queued=0, Expire=0 > Buf length = 0x0500 (1280) > Msg length = 0x0029 (41) > Message: > XID 0x1e3d > Flags 0x0100 > QR 0 (QUESTION) > OPCODE 0 (QUERY) > AA 0 > TC 0 > RD 1 > RA 0 > Z 0 > RCODE 0 (NOERROR) > QCOUNT 1 > ACOUNT 0 > NSCOUNT 0 > ARCOUNT 0 > QUESTION SECTION: > Offset = 0x000c, RR count = 0 > Name "(19)humphreygasproducts(3)com(0)" > QTYPE MX (15) > QCLASS 1 > ANSWER SECTION: > empty > AUTHORITY SECTION: > empty > ADDITIONAL SECTION: > empty > > 20070605 11:45:47 E4C PACKET UDP Snd 192.168.0.2 1e3d R Q [8081 > DR NOERROR] (19)humphreygasproducts(3)com(0) > UDP response info at 023194E0 > Socket = 488 > Remote addr 192.168.0.2, port 3069 > Time Query=14080, Queued=0, Expire=0 > Buf length = 0x0200 (512) > Msg length = 0x0055 (85) > Message: > XID 0x1e3d > Flags 0x8180 > QR 1 (RESPONSE) > OPCODE 0 (QUERY) > AA 0 > TC 0 > RD 1 > RA 1 > Z 0 > RCODE 0 (NOERROR) > QCOUNT 1 > ACOUNT 1 > NSCOUNT 0 > ARCOUNT 1 > QUESTION SECTION: > Offset = 0x000c, RR count = 0 > Name "(19)humphreygasproducts(3)com(0)" > QTYPE MX (15) > QCLASS 1 > ANSWER SECTION: > Offset = 0x0029, RR count = 0 > Name "[C00C](19)humphreygasproducts(3)com(0)" > TYPE MX (15) > CLASS 1 > TTL 3567 > DLEN 16 > DATA 10 (2)mx(8)valueweb[C020](3)com(0) > AUTHORITY SECTION: > empty > ADDITIONAL SECTION: > Offset = 0x0045, RR count = 0 > Name "[C037](2)mx(8)valueweb[C020](3)com(0)" > TYPE A (1) > CLASS 1 > TTL 267 > DLEN 4 > DATA 216.219.253.196 >

Re: MX lookup results different depending on client application zookster[ at ]gmail.com 6/8/2007 5:48:38 PM Thanks for the reply Jeremy. The "non-working" server belongs to another company so I can't get the information you requested from that machine. The mail server shows these results... C:\>ipconfig /all Windows IP Configuration Host Name . . . . . . . . . . . . : mail Primary Dns Suffix . . . . . . . : lehmans.lan Node Type . . . . . . . . . . . . : Unknown IP Routing Enabled. . . . . . . . : No WINS Proxy Enabled. . . . . . . . : No DNS Suffix Search List. . . . . . : lehmans.lan Ethernet adapter Local Area Connection 2: Connection-specific DNS Suffix . : Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Network Connection #2 Physical Address. . . . . . . . . : 00-13-72-4F-BE-C0 DHCP Enabled. . . . . . . . . . . : No IP Address. . . . . . . . . . . . : 192.168.0.2 Subnet Mask . . . . . . . . . . . : 255.255.255.240 Default Gateway . . . . . . . . . : 192.168.0.1 DNS Servers . . . . . . . . . . . : 192.168.1.7 192.168.0.2 192.168.1.5 C:\>nslookup Default Server: sv02.lehmans.lan Address: 192.168.1.7 [Quoted Text] > set type=mx > humphreygasproducts.com Server: sv02.lehmans.lan Address: 192.168.1.7 Non-authoritative answer: humphreygasproducts.com MX preference = 10, mail exchanger = mx.valueweb.com mx.valueweb.com internet address = 216.219.253.196 > Let me know if that helps or not. djz On Jun 7, 5:42 am, "Jeremy" <jer...[ at ]discussions.microsoft.com> wrote: > This is the output from an nslookup for your MX record: > > ---- > D:\downloads>nslookup > Default Server: dns1.tpgi.com.au > Address: 203.12.160.35:53 > > > set type=mx > > humphreygasproducts.com > > Server: dns1.tpgi.com.au > Address: 203.12.160.35:53 > > Non-authoritative answer: > humphreygasproducts.com MX preference = 10, mail exchanger = mx.valueweb.com > > humphreygasproducts.com nameserver = dns3.valueweb.com > humphreygasproducts.com nameserver = dns1.valueweb.com > humphreygasproducts.com nameserver = dns2.valueweb.com > mx.valueweb.com internet address = 216.219.253.196 > > ----- > > Can you please post the ipconfig /all output of both the non working server > and from the Exchange server and then the output of this nslookup query > above from both too. > > Cheers, > Jeremy.<zooks...[ at ]gmail.com> wrote in message > > news:1181069511.915087.37730[ at ]p77g2000hsh.googlegroups.com... > > > When our mail server performs an MX lookup on humphreygasproducts.com > > (which is done during the STMP conversation with their sending mail > > server when they send us a message) our internal Windows 2003 (5.2 > > Build 3790.srv03_sp1_gdr.070304-2232) DNS server returns a "non- > > existant domain" reply. If I perform an nslookup on the mx record > > while at the console on the mail server, it returns the MX record just > > fine. > > > I've tried flushing the DNS cache on the mail server, and clearing the > > cache in the DNS server. I've also checked the > > humphreygasproducts.com domain onwww.checkdns.net > > > Any thoughts or help is greatly appreciated. > > > Below is the debug log showing the mail server request and the DNS > > server negative reply. > > > 20070605 11:42:15 E4C PACKET UDP Rcv 192.168.0.2 1dc3 Q [0001 > > D NOERROR] (19)humphreygasproducts(3)com(0) > > UDP question info at 022B4F50 > > Socket = 488 > > Remote addr 192.168.0.2, port 2929 > > Time Query=13868, Queued=0, Expire=0 > > Buf length = 0x0500 (1280) > > Msg length = 0x0029 (41) > > Message: > > XID 0x1dc3 > > Flags 0x0100 > > QR 0 (QUESTION) > > OPCODE 0 (QUERY) > > AA 0 > > TC 0 > > RD 1 > > RA 0 > > Z 0 > > RCODE 0 (NOERROR) > > QCOUNT 1 > > ACOUNT 0 > > NSCOUNT 0 > > ARCOUNT 0 > > QUESTION SECTION: > > Offset = 0x000c, RR count = 0 > > Name "(19)humphreygasproducts(3)com(0)" > > QTYPE MX (15) > > QCLASS 1 > > ANSWER SECTION: > > empty > > AUTHORITY SECTION: > > empty > > ADDITIONAL SECTION: > > empty > > > 20070605 11:42:15 E4C PACKET UDP Snd 192.168.0.2 1dc3 R Q [8381 > > DR NXDOMAIN] (19)humphreygasproducts(3)com(0) > > UDP response info at 022B4F50 > > Socket = 488 > > Remote addr 192.168.0.2, port 2929 > > Time Query=13868, Queued=0, Expire=0 > > Buf length = 0x0200 (512) > > Msg length = 0x0029 (41) > > Message: > > XID 0x1dc3 > > Flags 0x8183 > > QR 1 (RESPONSE) > > OPCODE 0 (QUERY) > > AA 0 > > TC 0 > > RD 1 > > RA 1 > > Z 0 > > RCODE 3 (NXDOMAIN) > > QCOUNT 1 > > ACOUNT 0 > > NSCOUNT 0 > > ARCOUNT 0 > > QUESTION SECTION: > > Offset = 0x000c, RR count = 0 > > Name "(19)humphreygasproducts(3)com(0)" > > QTYPE MX (15) > > QCLASS 1 > > ANSWER SECTION: > > empty > > AUTHORITY SECTION: > > empty > > ADDITIONAL SECTION: > > empty > > > ------------------ > > > Below is the nslookup request and reply. > > > 20070605 11:45:47 E4C PACKET UDP Rcv 192.168.0.2 1e3d Q [0001 > > D NOERROR] (19)humphreygasproducts(3)com(0) > > UDP question info at 023194E0 > > Socket = 488 > > Remote addr 192.168.0.2, port 3069 > > Time Query=14080, Queued=0, Expire=0 > > Buf length = 0x0500 (1280) > > Msg length = 0x0029 (41) > > Message: > > XID 0x1e3d > > Flags 0x0100 > > QR 0 (QUESTION) > > OPCODE 0 (QUERY) > > AA 0 > > TC 0 > > RD 1 > > RA 0 > > Z 0 > > RCODE 0 (NOERROR) > > QCOUNT 1 > > ACOUNT 0 > > NSCOUNT 0 > > ARCOUNT 0 > > QUESTION SECTION: > > Offset = 0x000c, RR count = 0 > > Name "(19)humphreygasproducts(3)com(0)" > > QTYPE MX (15) > > QCLASS 1 > > ANSWER SECTION: > > empty > > AUTHORITY SECTION: > > empty > > ADDITIONAL SECTION: > > empty > > > 20070605 11:45:47 E4C PACKET UDP Snd 192.168.0.2 1e3d R Q [8081 > > DR NOERROR] (19)humphreygasproducts(3)com(0) > > UDP response info at 023194E0 > > Socket = 488 > > Remote addr 192.168.0.2, port 3069 > > Time Query=14080, Queued=0, Expire=0 > > Buf length = 0x0200 (512) > > Msg length = 0x0055 (85) > > Message: > > XID 0x1e3d > > Flags 0x8180 > > QR 1 (RESPONSE) > > OPCODE 0 (QUERY) > > AA 0 > > TC 0 > > RD 1 > > RA 1 > > Z 0 > > RCODE 0 (NOERROR) > > QCOUNT 1 > > ACOUNT 1 > > NSCOUNT 0 > > ARCOUNT 1 > > QUESTION SECTION: > > Offset = 0x000c, RR count = 0 > > Name "(19)humphreygasproducts(3)com(0)" > > QTYPE MX (15) > > QCLASS 1 > > ANSWER SECTION: > > Offset = 0x0029, RR count = 0 > > Name "[C00C](19)humphreygasproducts(3)com(0)" > > TYPE MX (15) > > CLASS 1 > > TTL 3567 > > DLEN 16 > > DATA 10 (2)mx(8)valueweb[C020](3)com(0) > > AUTHORITY SECTION: > > empty > > ADDITIONAL SECTION: > > Offset = 0x0045, RR count = 0 > > Name "[C037](2)mx(8)valueweb[C020](3)com(0)" > > TYPE A (1) > > CLASS 1 > > TTL 267 > > DLEN 4 > > DATA 216.219.253.196

Re: MX lookup results different depending on client application "Jeremy" <jeremy[ at ]discussions.microsoft.com> 6/11/2007 9:47:18 AM Well it looks to me like your system has correct DNS settings, but you really need to get the non-working system's ip configuration to diagnose this problem. I can't help much without it. <zookster[ at ]gmail.com> wrote in message news:1181324918.592571.117320[ at ]g4g2000hsf.googlegroups.com... [Quoted Text] > Thanks for the reply Jeremy. > > The "non-working" server belongs to another company so I can't get the > information you requested from that machine. > > The mail server shows these results... > > C:\>ipconfig /all > > Windows IP Configuration > > Host Name . . . . . . . . . . . . : mail > Primary Dns Suffix . . . . . . . : lehmans.lan > Node Type . . . . . . . . . . . . : Unknown > IP Routing Enabled. . . . . . . . : No > WINS Proxy Enabled. . . . . . . . : No > DNS Suffix Search List. . . . . . : lehmans.lan > > Ethernet adapter Local Area Connection 2: > > Connection-specific DNS Suffix . : > Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Network > Connection #2 > Physical Address. . . . . . . . . : 00-13-72-4F-BE-C0 > DHCP Enabled. . . . . . . . . . . : No > IP Address. . . . . . . . . . . . : 192.168.0.2 > Subnet Mask . . . . . . . . . . . : 255.255.255.240 > Default Gateway . . . . . . . . . : 192.168.0.1 > DNS Servers . . . . . . . . . . . : 192.168.1.7 > 192.168.0.2 > 192.168.1.5 > > C:\>nslookup > Default Server: sv02.lehmans.lan > Address: 192.168.1.7 > >> set type=mx >> humphreygasproducts.com > Server: sv02.lehmans.lan > Address: 192.168.1.7 > > Non-authoritative answer: > humphreygasproducts.com MX preference = 10, mail exchanger = > mx.valueweb.com > > mx.valueweb.com internet address = 216.219.253.196 >> > > Let me know if that helps or not. > > djz > > On Jun 7, 5:42 am, "Jeremy" <jer...[ at ]discussions.microsoft.com> wrote: >> This is the output from an nslookup for your MX record: >> >> ---- >> D:\downloads>nslookup >> Default Server: dns1.tpgi.com.au >> Address: 203.12.160.35:53 >> >> > set type=mx >> > humphreygasproducts.com >> >> Server: dns1.tpgi.com.au >> Address: 203.12.160.35:53 >> >> Non-authoritative answer: >> humphreygasproducts.com MX preference = 10, mail exchanger = >> mx.valueweb.com >> >> humphreygasproducts.com nameserver = dns3.valueweb.com >> humphreygasproducts.com nameserver = dns1.valueweb.com >> humphreygasproducts.com nameserver = dns2.valueweb.com >> mx.valueweb.com internet address = 216.219.253.196 >> >> ----- >> >> Can you please post the ipconfig /all output of both the non working >> server >> and from the Exchange server and then the output of this nslookup query >> above from both too. >> >> Cheers, >> Jeremy.<zooks...[ at ]gmail.com> wrote in message >> >> news:1181069511.915087.37730[ at ]p77g2000hsh.googlegroups.com... >> >> > When our mail server performs an MX lookup on humphreygasproducts.com >> > (which is done during the STMP conversation with their sending mail >> > server when they send us a message) our internal Windows 2003 (5.2 >> > Build 3790.srv03_sp1_gdr.070304-2232) DNS server returns a "non- >> > existant domain" reply. If I perform an nslookup on the mx record >> > while at the console on the mail server, it returns the MX record just >> > fine. >> >> > I've tried flushing the DNS cache on the mail server, and clearing the >> > cache in the DNS server. I've also checked the >> > humphreygasproducts.com domain onwww.checkdns.net >> >> > Any thoughts or help is greatly appreciated. >> >> > Below is the debug log showing the mail server request and the DNS >> > server negative reply. >> >> > 20070605 11:42:15 E4C PACKET UDP Rcv 192.168.0.2 1dc3 Q [0001 >> > D NOERROR] (19)humphreygasproducts(3)com(0) >> > UDP question info at 022B4F50 >> > Socket = 488 >> > Remote addr 192.168.0.2, port 2929 >> > Time Query=13868, Queued=0, Expire=0 >> > Buf length = 0x0500 (1280) >> > Msg length = 0x0029 (41) >> > Message: >> > XID 0x1dc3 >> > Flags 0x0100 >> > QR 0 (QUESTION) >> > OPCODE 0 (QUERY) >> > AA 0 >> > TC 0 >> > RD 1 >> > RA 0 >> > Z 0 >> > RCODE 0 (NOERROR) >> > QCOUNT 1 >> > ACOUNT 0 >> > NSCOUNT 0 >> > ARCOUNT 0 >> > QUESTION SECTION: >> > Offset = 0x000c, RR count = 0 >> > Name "(19)humphreygasproducts(3)com(0)" >> > QTYPE MX (15) >> > QCLASS 1 >> > ANSWER SECTION: >> > empty >> > AUTHORITY SECTION: >> > empty >> > ADDITIONAL SECTION: >> > empty >> >> > 20070605 11:42:15 E4C PACKET UDP Snd 192.168.0.2 1dc3 R Q [8381 >> > DR NXDOMAIN] (19)humphreygasproducts(3)com(0) >> > UDP response info at 022B4F50 >> > Socket = 488 >> > Remote addr 192.168.0.2, port 2929 >> > Time Query=13868, Queued=0, Expire=0 >> > Buf length = 0x0200 (512) >> > Msg length = 0x0029 (41) >> > Message: >> > XID 0x1dc3 >> > Flags 0x8183 >> > QR 1 (RESPONSE) >> > OPCODE 0 (QUERY) >> > AA 0 >> > TC 0 >> > RD 1 >> > RA 1 >> > Z 0 >> > RCODE 3 (NXDOMAIN) >> > QCOUNT 1 >> > ACOUNT 0 >> > NSCOUNT 0 >> > ARCOUNT 0 >> > QUESTION SECTION: >> > Offset = 0x000c, RR count = 0 >> > Name "(19)humphreygasproducts(3)com(0)" >> > QTYPE MX (15) >> > QCLASS 1 >> > ANSWER SECTION: >> > empty >> > AUTHORITY SECTION: >> > empty >> > ADDITIONAL SECTION: >> > empty >> >> > ------------------ >> >> > Below is the nslookup request and reply. >> >> > 20070605 11:45:47 E4C PACKET UDP Rcv 192.168.0.2 1e3d Q [0001 >> > D NOERROR] (19)humphreygasproducts(3)com(0) >> > UDP question info at 023194E0 >> > Socket = 488 >> > Remote addr 192.168.0.2, port 3069 >> > Time Query=14080, Queued=0, Expire=0 >> > Buf length = 0x0500 (1280) >> > Msg length = 0x0029 (41) >> > Message: >> > XID 0x1e3d >> > Flags 0x0100 >> > QR 0 (QUESTION) >> > OPCODE 0 (QUERY) >> > AA 0 >> > TC 0 >> > RD 1 >> > RA 0 >> > Z 0 >> > RCODE 0 (NOERROR) >> > QCOUNT 1 >> > ACOUNT 0 >> > NSCOUNT 0 >> > ARCOUNT 0 >> > QUESTION SECTION: >> > Offset = 0x000c, RR count = 0 >> > Name "(19)humphreygasproducts(3)com(0)" >> > QTYPE MX (15) >> > QCLASS 1 >> > ANSWER SECTION: >> > empty >> > AUTHORITY SECTION: >> > empty >> > ADDITIONAL SECTION: >> > empty >> >> > 20070605 11:45:47 E4C PACKET UDP Snd 192.168.0.2 1e3d R Q [8081 >> > DR NOERROR] (19)humphreygasproducts(3)com(0) >> > UDP response info at 023194E0 >> > Socket = 488 >> > Remote addr 192.168.0.2, port 3069 >> > Time Query=14080, Queued=0, Expire=0 >> > Buf length = 0x0200 (512) >> > Msg length = 0x0055 (85) >> > Message: >> > XID 0x1e3d >> > Flags 0x8180 >> > QR 1 (RESPONSE) >> > OPCODE 0 (QUERY) >> > AA 0 >> > TC 0 >> > RD 1 >> > RA 1 >> > Z 0 >> > RCODE 0 (NOERROR) >> > QCOUNT 1 >> > ACOUNT 1 >> > NSCOUNT 0 >> > ARCOUNT 1 >> > QUESTION SECTION: >> > Offset = 0x000c, RR count = 0 >> > Name "(19)humphreygasproducts(3)com(0)" >> > QTYPE MX (15) >> > QCLASS 1 >> > ANSWER SECTION: >> > Offset = 0x0029, RR count = 0 >> > Name "[C00C](19)humphreygasproducts(3)com(0)" >> > TYPE MX (15) >> > CLASS 1 >> > TTL 3567 >> > DLEN 16 >> > DATA 10 (2)mx(8)valueweb[C020](3)com(0) >> > AUTHORITY SECTION: >> > empty >> > ADDITIONAL SECTION: >> > Offset = 0x0045, RR count = 0 >> > Name "[C037](2)mx(8)valueweb[C020](3)com(0)" >> > TYPE A (1) >> > CLASS 1 >> > TTL 267 >> > DLEN 4 >> > DATA 216.219.253.196 > >

Re: MX lookup results different depending on client application zookster[ at ]gmail.com 6/13/2007 6:47:05 PM Can you explain what you mean by "the non-working system?" Do mean the DNS server? On Jun 11, 5:47 am, "Jeremy" <jer...[ at ]discussions.microsoft.com> wrote: [Quoted Text] > Well it looks to me like your system has correct DNS settings, but you > really need to get the non-working system's ip configuration to diagnose > this problem. I can't help much without it.<zooks...[ at ]gmail.com> wrote in message > > news:1181324918.592571.117320[ at ]g4g2000hsf.googlegroups.com... > > > Thanks for the reply Jeremy. > > > The "non-working" server belongs to another company so I can't get the > > information you requested from that machine. > > > The mail server shows these results... > > > C:\>ipconfig /all > > > Windows IP Configuration > > > Host Name . . . . . . . . . . . . : mail > > Primary Dns Suffix . . . . . . . : lehmans.lan > > Node Type . . . . . . . . . . . . : Unknown > > IP Routing Enabled. . . . . . . . : No > > WINS Proxy Enabled. . . . . . . . : No > > DNS Suffix Search List. . . . . . : lehmans.lan > > > Ethernet adapter Local Area Connection 2: > > > Connection-specific DNS Suffix . : > > Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Network > > Connection #2 > > Physical Address. . . . . . . . . : 00-13-72-4F-BE-C0 > > DHCP Enabled. . . . . . . . . . . : No > > IP Address. . . . . . . . . . . . : 192.168.0.2 > > Subnet Mask . . . . . . . . . . . : 255.255.255.240 > > Default Gateway . . . . . . . . . : 192.168.0.1 > > DNS Servers . . . . . . . . . . . : 192.168.1.7 > > 192.168.0.2 > > 192.168.1.5 > > > C:\>nslookup > > Default Server: sv02.lehmans.lan > > Address: 192.168.1.7 > > >> set type=mx > >> humphreygasproducts.com > > Server: sv02.lehmans.lan > > Address: 192.168.1.7 > > > Non-authoritative answer: > > humphreygasproducts.com MX preference = 10, mail exchanger = > > mx.valueweb.com > > > mx.valueweb.com internet address = 216.219.253.196 > > > Let me know if that helps or not. > > > djz > > > On Jun 7, 5:42 am, "Jeremy" <jer...[ at ]discussions.microsoft.com> wrote: > >> This is the output from an nslookup for your MX record: > > >> ---- > >> D:\downloads>nslookup > >> Default Server: dns1.tpgi.com.au > >> Address: 203.12.160.35:53 > > >> > set type=mx > >> > humphreygasproducts.com > > >> Server: dns1.tpgi.com.au > >> Address: 203.12.160.35:53 > > >> Non-authoritative answer: > >> humphreygasproducts.com MX preference = 10, mail exchanger = > >> mx.valueweb.com > > >> humphreygasproducts.com nameserver = dns3.valueweb.com > >> humphreygasproducts.com nameserver = dns1.valueweb.com > >> humphreygasproducts.com nameserver = dns2.valueweb.com > >> mx.valueweb.com internet address = 216.219.253.196 > > >> ----- > > >> Can you please post the ipconfig /all output of both the non working > >> server > >> and from the Exchange server and then the output of this nslookup query > >> above from both too. > > >> Cheers, > >> Jeremy.<zooks...[ at ]gmail.com> wrote in message > > >>news:1181069511.915087.37730[ at ]p77g2000hsh.googlegroups.com... > > >> > When our mail server performs an MX lookup on humphreygasproducts.com > >> > (which is done during the STMP conversation with their sending mail > >> > server when they send us a message) our internal Windows 2003 (5.2 > >> > Build 3790.srv03_sp1_gdr.070304-2232) DNS server returns a "non- > >> > existant domain" reply. If I perform an nslookup on the mx record > >> > while at the console on the mail server, it returns the MX record just > >> > fine. > > >> > I've tried flushing the DNS cache on the mail server, and clearing the > >> > cache in the DNS server. I've also checked the > >> > humphreygasproducts.com domain onwww.checkdns.net > > >> > Any thoughts or help is greatly appreciated. > > >> > Below is the debug log showing the mail server request and the DNS > >> > server negative reply. > > >> > 20070605 11:42:15 E4C PACKET UDP Rcv 192.168.0.2 1dc3 Q [0001 > >> > D NOERROR] (19)humphreygasproducts(3)com(0) > >> > UDP question info at 022B4F50 > >> > Socket = 488 > >> > Remote addr 192.168.0.2, port 2929 > >> > Time Query=13868, Queued=0, Expire=0 > >> > Buf length = 0x0500 (1280) > >> > Msg length = 0x0029 (41) > >> > Message: > >> > XID 0x1dc3 > >> > Flags 0x0100 > >> > QR 0 (QUESTION) > >> > OPCODE 0 (QUERY) > >> > AA 0 > >> > TC 0 > >> > RD 1 > >> > RA 0 > >> > Z 0 > >> > RCODE 0 (NOERROR) > >> > QCOUNT 1 > >> > ACOUNT 0 > >> > NSCOUNT 0 > >> > ARCOUNT 0 > >> > QUESTION SECTION: > >> > Offset = 0x000c, RR count = 0 > >> > Name "(19)humphreygasproducts(3)com(0)" > >> > QTYPE MX (15) > >> > QCLASS 1 > >> > ANSWER SECTION: > >> > empty > >> > AUTHORITY SECTION: > >> > empty > >> > ADDITIONAL SECTION: > >> > empty > > >> > 20070605 11:42:15 E4C PACKET UDP Snd 192.168.0.2 1dc3 R Q [8381 > >> > DR NXDOMAIN] (19)humphreygasproducts(3)com(0) > >> > UDP response info at 022B4F50 > >> > Socket = 488 > >> > Remote addr 192.168.0.2, port 2929 > >> > Time Query=13868, Queued=0, Expire=0 > >> > Buf length = 0x0200 (512) > >> > Msg length = 0x0029 (41) > >> > Message: > >> > XID 0x1dc3 > >> > Flags 0x8183 > >> > QR 1 (RESPONSE) > >> > OPCODE 0 (QUERY) > >> > AA 0 > >> > TC 0 > >> > RD 1 > >> > RA 1 > >> > Z 0 > >> > RCODE 3 (NXDOMAIN) > >> > QCOUNT 1 > >> > ACOUNT 0 > >> > NSCOUNT 0 > >> > ARCOUNT 0 > >> > QUESTION SECTION: > >> > Offset = 0x000c, RR count = 0 > >> > Name "(19)humphreygasproducts(3)com(0)" > >> > QTYPE MX (15) > >> > QCLASS 1 > >> > ANSWER SECTION: > >> > empty > >> > AUTHORITY SECTION: > >> > empty > >> > ADDITIONAL SECTION: > >> > empty > > >> > ------------------ > > >> > Below is the nslookup request and reply. > > >> > 20070605 11:45:47 E4C PACKET UDP Rcv 192.168.0.2 1e3d Q [0001 > >> > D NOERROR] (19)humphreygasproducts(3)com(0) > >> > UDP question info at 023194E0 > >> > Socket = 488 > >> > Remote addr 192.168.0.2, port 3069 > >> > Time Query=14080, Queued=0, Expire=0 > >> > Buf length = 0x0500 (1280) > >> > Msg length = 0x0029 (41) > >> > Message: > >> > XID 0x1e3d > >> > Flags 0x0100 > >> > QR 0 (QUESTION) > >> > OPCODE 0 (QUERY) > >> > AA 0 > >> > TC 0 > >> > RD 1 > >> > RA 0 > >> > Z 0 > >> > RCODE 0 (NOERROR) > >> > QCOUNT 1 > >> > ACOUNT 0 > >> > NSCOUNT 0 > >> > ARCOUNT 0 > >> > QUESTION SECTION: > >> > Offset = 0x000c, RR count = 0 > >> > Name "(19)humphreygasproducts(3)com(0)" > >> > QTYPE MX (15) > >> > QCLASS 1 > >> > ANSWER SECTION: > >> > empty > >> > AUTHORITY SECTION: > >> > empty > >> > ADDITIONAL SECTION: > >> > empty > > >> > 20070605 11:45:47 E4C PACKET UDP Snd 192.168.0.2 1e3d R Q [8081 > >> > DR NOERROR] (19)humphreygasproducts(3)com(0) > >> > UDP response info at 023194E0 > >> > Socket = 488 > >> > Remote addr 192.168.0.2, port 3069 > >> > Time Query=14080, Queued=0, Expire=0 > >> > Buf length = 0x0200 (512) > >> > Msg length = 0x0055 (85) > >> > Message: > >> > XID 0x1e3d > >> > Flags 0x8180 > >> > QR 1 (RESPONSE) > >> > OPCODE 0 (QUERY) > >> > AA 0 > >> > TC 0 > >> > RD 1 > >> > RA 1 > >> > Z 0 > >> > RCODE 0 (NOERROR) > >> > QCOUNT 1 > >> > ACOUNT 1 > >> > NSCOUNT 0 > >> > ARCOUNT 1 > >> > QUESTION SECTION: > >> > Offset = 0x000c, RR count = 0 > >> > Name "(19)humphreygasproducts(3)com(0)" > >> > QTYPE MX (15) > >> > QCLASS 1 > >> > ANSWER SECTION: > >> > Offset = 0x0029, RR count = 0 > >> > Name "[C00C](19)humphreygasproducts(3)com(0)" > >> > TYPE MX (15) > >> > CLASS 1 > >> > TTL 3567 > >> > DLEN 16 > >> > DATA 10 (2)mx(8)valueweb[C020](3)com(0) > >> > AUTHORITY SECTION: > >> > empty > >> > ADDITIONAL SECTION: > >> > Offset = 0x0045, RR count = 0 > >> > Name "[C037](2)mx(8)valueweb[C020](3)com(0)" > >> > TYPE A (1) > >> > CLASS 1 > >> > TTL 267 > >> > DLEN 4 > >> > DATA 216.219.253.196

Re: MX lookup results different depending on client application "Jeremy" <jeremy[ at ]discussions.microsoft.com> 6/14/2007 8:33:58 AM Sorry, I've just re-read your original post and realise I have misunderstood your problem. So humphreysgasproducts.com is a third party, not your organisation, is that right? And the key problem is that you are unable to send mail to them? Is your mail server an Exchange server? How is it configured to route mail? Via DNS or smart host? <zookster[ at ]gmail.com> wrote in message news:1181760425.570135.170780[ at ]a26g2000pre.googlegroups.com... [Quoted Text] > Can you explain what you mean by "the non-working system?" Do mean > the DNS server? > > > On Jun 11, 5:47 am, "Jeremy" <jer...[ at ]discussions.microsoft.com> wrote: >> Well it looks to me like your system has correct DNS settings, but you >> really need to get the non-working system's ip configuration to diagnose >> this problem. I can't help much without it.<zooks...[ at ]gmail.com> wrote in >> message >> >> news:1181324918.592571.117320[ at ]g4g2000hsf.googlegroups.com... >> >> > Thanks for the reply Jeremy. >> >> > The "non-working" server belongs to another company so I can't get the >> > information you requested from that machine. >> >> > The mail server shows these results... >> >> > C:\>ipconfig /all >> >> > Windows IP Configuration >> >> > Host Name . . . . . . . . . . . . : mail >> > Primary Dns Suffix . . . . . . . : lehmans.lan >> > Node Type . . . . . . . . . . . . : Unknown >> > IP Routing Enabled. . . . . . . . : No >> > WINS Proxy Enabled. . . . . . . . : No >> > DNS Suffix Search List. . . . . . : lehmans.lan >> >> > Ethernet adapter Local Area Connection 2: >> >> > Connection-specific DNS Suffix . : >> > Description . . . . . . . . . . . : Intel(R) PRO/1000 MT Network >> > Connection #2 >> > Physical Address. . . . . . . . . : 00-13-72-4F-BE-C0 >> > DHCP Enabled. . . . . . . . . . . : No >> > IP Address. . . . . . . . . . . . : 192.168.0.2 >> > Subnet Mask . . . . . . . . . . . : 255.255.255.240 >> > Default Gateway . . . . . . . . . : 192.168.0.1 >> > DNS Servers . . . . . . . . . . . : 192.168.1.7 >> > 192.168.0.2 >> > 192.168.1.5 >> >> > C:\>nslookup >> > Default Server: sv02.lehmans.lan >> > Address: 192.168.1.7 >> >> >> set type=mx >> >> humphreygasproducts.com >> > Server: sv02.lehmans.lan >> > Address: 192.168.1.7 >> >> > Non-authoritative answer: >> > humphreygasproducts.com MX preference = 10, mail exchanger = >> > mx.valueweb.com >> >> > mx.valueweb.com internet address = 216.219.253.196 >> >> > Let me know if that helps or not. >> >> > djz >> >> > On Jun 7, 5:42 am, "Jeremy" <jer...[ at ]discussions.microsoft.com> wrote: >> >> This is the output from an nslookup for your MX record: >> >> >> ---- >> >> D:\downloads>nslookup >> >> Default Server: dns1.tpgi.com.au >> >> Address: 203.12.160.35:53 >> >> >> > set type=mx >> >> > humphreygasproducts.com >> >> >> Server: dns1.tpgi.com.au >> >> Address: 203.12.160.35:53 >> >> >> Non-authoritative answer: >> >> humphreygasproducts.com MX preference = 10, mail exchanger = >> >> mx.valueweb.com >> >> >> humphreygasproducts.com nameserver = dns3.valueweb.com >> >> humphreygasproducts.com nameserver = dns1.valueweb.com >> >> humphreygasproducts.com nameserver = dns2.valueweb.com >> >> mx.valueweb.com internet address = 216.219.253.196 >> >> >> ----- >> >> >> Can you please post the ipconfig /all output of both the non working >> >> server >> >> and from the Exchange server and then the output of this nslookup >> >> query >> >> above from both too. >> >> >> Cheers, >> >> Jeremy.<zooks...[ at ]gmail.com> wrote in message >> >> >>news:1181069511.915087.37730[ at ]p77g2000hsh.googlegroups.com... >> >> >> > When our mail server performs an MX lookup on >> >> > humphreygasproducts.com >> >> > (which is done during the STMP conversation with their sending mail >> >> > server when they send us a message) our internal Windows 2003 (5.2 >> >> > Build 3790.srv03_sp1_gdr.070304-2232) DNS server returns a "non- >> >> > existant domain" reply. If I perform an nslookup on the mx record >> >> > while at the console on the mail server, it returns the MX record >> >> > just >> >> > fine. >> >> >> > I've tried flushing the DNS cache on the mail server, and clearing >> >> > the >> >> > cache in the DNS server. I've also checked the >> >> > humphreygasproducts.com domain onwww.checkdns.net >> >> >> > Any thoughts or help is greatly appreciated. >> >> >> > Below is the debug log showing the mail server request and the DNS >> >> > server negative reply. >> >> >> > 20070605 11:42:15 E4C PACKET UDP Rcv 192.168.0.2 1dc3 Q [0001 >> >> > D NOERROR] (19)humphreygasproducts(3)com(0) >> >> > UDP question info at 022B4F50 >> >> > Socket = 488 >> >> > Remote addr 192.168.0.2, port 2929 >> >> > Time Query=13868, Queued=0, Expire=0 >> >> > Buf length = 0x0500 (1280) >> >> > Msg length = 0x0029 (41) >> >> > Message: >> >> > XID 0x1dc3 >> >> > Flags 0x0100 >> >> > QR 0 (QUESTION) >> >> > OPCODE 0 (QUERY) >> >> > AA 0 >> >> > TC 0 >> >> > RD 1 >> >> > RA 0 >> >> > Z 0 >> >> > RCODE 0 (NOERROR) >> >> > QCOUNT 1 >> >> > ACOUNT 0 >> >> > NSCOUNT 0 >> >> > ARCOUNT 0 >> >> > QUESTION SECTION: >> >> > Offset = 0x000c, RR count = 0 >> >> > Name "(19)humphreygasproducts(3)com(0)" >> >> > QTYPE MX (15) >> >> > QCLASS 1 >> >> > ANSWER SECTION: >> >> > empty >> >> > AUTHORITY SECTION: >> >> > empty >> >> > ADDITIONAL SECTION: >> >> > empty >> >> >> > 20070605 11:42:15 E4C PACKET UDP Snd 192.168.0.2 1dc3 R Q [8381 >> >> > DR NXDOMAIN] (19)humphreygasproducts(3)com(0) >> >> > UDP response info at 022B4F50 >> >> > Socket = 488 >> >> > Remote addr 192.168.0.2, port 2929 >> >> > Time Query=13868, Queued=0, Expire=0 >> >> > Buf length = 0x0200 (512) >> >> > Msg length = 0x0029 (41) >> >> > Message: >> >> > XID 0x1dc3 >> >> > Flags 0x8183 >> >> > QR 1 (RESPONSE) >> >> > OPCODE 0 (QUERY) >> >> > AA 0 >> >> > TC 0 >> >> > RD 1 >> >> > RA 1 >> >> > Z 0 >> >> > RCODE 3 (NXDOMAIN) >> >> > QCOUNT 1 >> >> > ACOUNT 0 >> >> > NSCOUNT 0 >> >> > ARCOUNT 0 >> >> > QUESTION SECTION: >> >> > Offset = 0x000c, RR count = 0 >> >> > Name "(19)humphreygasproducts(3)com(0)" >> >> > QTYPE MX (15) >> >> > QCLASS 1 >> >> > ANSWER SECTION: >> >> > empty >> >> > AUTHORITY SECTION: >> >> > empty >> >> > ADDITIONAL SECTION: >> >> > empty >> >> >> > ------------------ >> >> >> > Below is the nslookup request and reply. >> >> >> > 20070605 11:45:47 E4C PACKET UDP Rcv 192.168.0.2 1e3d Q [0001 >> >> > D NOERROR] (19)humphreygasproducts(3)com(0) >> >> > UDP question info at 023194E0 >> >> > Socket = 488 >> >> > Remote addr 192.168.0.2, port 3069 >> >> > Time Query=14080, Queued=0, Expire=0 >> >> > Buf length = 0x0500 (1280) >> >> > Msg length = 0x0029 (41) >> >> > Message: >> >> > XID 0x1e3d >> >> > Flags 0x0100 >> >> > QR 0 (QUESTION) >> >> > OPCODE 0 (QUERY) >> >> > AA 0 >> >> > TC 0 >> >> > RD 1 >> >> > RA 0 >> >> > Z 0 >> >> > RCODE 0 (NOERROR) >> >> > QCOUNT 1 >> >> > ACOUNT 0 >> >> > NSCOUNT 0 >> >> > ARCOUNT 0 >> >> > QUESTION SECTION: >> >> > Offset = 0x000c, RR count = 0 >> >> > Name "(19)humphreygasproducts(3)com(0)" >> >> > QTYPE MX (15) >> >> > QCLASS 1 >> >> > ANSWER SECTION: >> >> > empty >> >> > AUTHORITY SECTION: >> >> > empty >> >> > ADDITIONAL SECTION: >> >> > empty >> >> >> > 20070605 11:45:47 E4C PACKET UDP Snd 192.168.0.2 1e3d R Q [8081 >> >> > DR NOERROR] (19)humphreygasproducts(3)com(0) >> >> > UDP response info at 023194E0 >> >> > Socket = 488 >> >> > Remote addr 192.168.0.2, port 3069 >> >> > Time Query=14080, Queued=0, Expire=0 >> >> > Buf length = 0x0200 (512) >> >> > Msg length = 0x0055 (85) >> >> > Message: >> >> > XID 0x1e3d >> >> > Flags 0x8180 >> >> > QR 1 (RESPONSE) >> >> > OPCODE 0 (QUERY) >> >> > AA 0 >> >> > TC 0 >> >> > RD 1 >> >> > RA 1 >> >> > Z 0 >> >> > RCODE 0 (NOERROR) >> >> > QCOUNT 1 >> >> > ACOUNT 1 >> >> > NSCOUNT 0 >> >> > ARCOUNT 1 >> >> > QUESTION SECTION: >> >> > Offset = 0x000c, RR count = 0 >> >> > Name "(19)humphreygasproducts(3)com(0)" >> >> > QTYPE MX (15) >> >> > QCLASS 1 >> >> > ANSWER SECTION: >> >> > Offset = 0x0029, RR count = 0 >> >> > Name "[C00C](19)humphreygasproducts(3)com(0)" >> >> > TYPE MX (15) >> >> > CLASS 1 >> >> > TTL 3567 >> >> > DLEN 16 >> >> > DATA 10 (2)mx(8)valueweb[C020](3)com(0) >> >> > AUTHORITY SECTION: >> >> > empty >> >> > ADDITIONAL SECTION: >> >> > Offset = 0x0045, RR count = 0 >> >> > Name "[C037](2)mx(8)valueweb[C020](3)com(0)" >> >> > TYPE A (1) >> >> > CLASS 1 >> >> > TTL 267 >> >> > DLEN 4 >> >> > DATA 216.219.253.196 > >

Re: MX lookup results different depending on client application zookster[ at ]gmail.com 6/25/2007 4:08:43 PM Thanks for the reply. Our mail server is Kerio MailServer 6. www.kerio.com It routes mail using our internal DNS server to lookup MX records. What is really strange is if we put the IP address of the humphreygasproducts.com MX server in the white list on the mail server, the DNS lookup returns a different answer. How that could possibily be, I don't know, since the DNS queries look the same when I use the debug option.

Re: MX lookup results different depending on client application "Kevin D. Goodknecht Sr. [MVP]" <admin[ at ]nospam.WFTX.US> 6/25/2007 10:19:41 PM Read inline please. In news:1182787723.110229.301240[ at ]n60g2000hse.googlegroups.com, zookster[ at ]gmail.com <zookster[ at ]gmail.com> typed: [Quoted Text] > Thanks for the reply. Our mail server is Kerio MailServer 6. > www.kerio.com It routes mail using our internal DNS server to lookup > MX records. > > What is really strange is if we put the IP address of the > humphreygasproducts.com MX server in the white list on the mail > server, the DNS lookup returns a different answer. How that could > possibily be, I don't know, since the DNS queries look the same when I > use the debug option. > > DNS Servers . . . . . . . . . . . : 192.168.1.7 > > 192.168.0.2 > > 192.168.1.5 You have three DNS servers in your DNS server list, is it possible that not all of your servers are answering the same? All DNS server in a clients DNS server must be able to resolve all names correctly regardless of the domain name. Use the server command in nslookup to switch between all DNS servers and make sure all answer correctly, any that don't should not be used. For example, I had some people that have one internal DNS server in the list and one external server in the list, thinking that if the first server doesn't answer correctly, it will switch to the second server, which may be an ISP's DNS. The problem with this scenario is the DNS client service will stick to a DNS server, as long as it answers. If it answers with a negative answer, it's an answer, and the DNS client service will accept it a correct. -- Best regards, Kevin D. Goodknecht Sr. [MVP] Hope This Helps =================================== When responding to posts, please "Reply to Group" via your newsreader so that others may learn and benefit from your issue, to respond directly to me remove the nospam. from my email address. =================================== http://www.lonestaramerica.com/ http://support.wftx.us/ http://message.wftx.us/ =================================== Use Outlook Express?... Get OE_Quotefix: It will strip signature out and more http://home.in.tum.de/~jain/software/oe-quotefix/ =================================== Keep a back up of your OE settings and folders with OEBackup: http://www.oehelp.com/OEBackup/Default.aspx ===================================

Re: MX lookup results different depending on client application zookster[ at ]gmail.com 7/2/2007 4:07:27 PM Thanks for the reply. I tried your suggestion, and all three respond the same way using nslookup. Also, when I enabled debugging on the 192.168.1.7 DNS server, I was able to see both requests and two different responses from the server depending on which client app sent the request. What is really weird is that the debug log shows that both requests look the same, but the response is different. Thanks again for your suggestions. On Jun 25, 6:19 pm, "Kevin D. Goodknecht Sr. [MVP]" <a...[ at ]nospam.WFTX.US> wrote: [Quoted Text] > Read inline please. > > Innews:1182787723.110229.301240[ at ]n60g2000hse.googlegroups.com, > zooks...[ at ]gmail.com <zooks...[ at ]gmail.com> typed: > > > Thanks for the reply. Our mail server is Kerio MailServer 6. > >www.kerio.comIt routes mail using our internal DNS server to lookup > > MX records. > > > What is really strange is if we put the IP address of the > > humphreygasproducts.com MX server in the white list on the mail > > server, the DNS lookup returns a different answer. How that could > > possibily be, I don't know, since the DNS queries look the same when I > > use the debug option. > > > DNS Servers . . . . . . . . . . . : 192.168.1.7 > > > 192.168.0.2 > > > 192.168.1.5 > > You have three DNS servers in your DNS server list, is it possible that not > all of your servers are answering the same? > All DNS server in a clients DNS server must be able to resolve all names > correctly regardless of the domain name. Use the server command in nslookup > to switch between all DNS servers and make sure all answer correctly, any > that don't should not be used. > > For example, I had some people that have one internal DNS server in the list > and one external server in the list, thinking that if the first server > doesn't answer correctly, it will switch to the second server, which may be > an ISP's DNS. The problem with this scenario is the DNS client service will > stick to a DNS server, as long as it answers. If it answers with a negative > answer, it's an answer, and the DNS client service will accept it a correct. > > -- > Best regards, > Kevin D. Goodknecht Sr. [MVP] > Hope This Helps > > =================================== > When responding to posts, please "Reply to Group" > via your newsreader so that others may learn and > benefit from your issue, to respond directly to > me remove the nospam. from my email address. > ===================================http://www.lonestaramerica.com/http://support.wftx.us/http://message.wftx.us/ > =================================== > Use Outlook Express?... Get OE_Quotefix: > It will strip signature out and morehttp://home.in.tum.de/~jain/software/oe-quotefix/ > =================================== > Keep a back up of your OE settings and folders > with OEBackup:http://www.oehelp.com/OEBackup/Default.aspx > ===================================

Re: MX lookup results different depending on client application "Kevin D. Goodknecht Sr. [MVP]" <admin[ at ]nospam.WFTX.US> 7/6/2007 1:12:03 PM Read inline please. In news:1183392447.717062.50190[ at ]q69g2000hsb.googlegroups.com, zookster[ at ]gmail.com <zookster[ at ]gmail.com> typed: [Quoted Text] > Thanks for the reply. > > I tried your suggestion, and all three respond the same way using > nslookup. > > Also, when I enabled debugging on the 192.168.1.7 DNS server, I was > able to see both requests and two different responses from the server > depending on which client app sent the request. > > What is really weird is that the debug log shows that both requests > look the same, but the response is different. What is different in the response? -- Best regards, Kevin D. Goodknecht Sr. [MVP] Hope This Helps =================================== When responding to posts, please "Reply to Group" via your newsreader so that others may learn and benefit from your issue, to respond directly to me remove the nospam. from my email address. =================================== http://www.lonestaramerica.com/ http://support.wftx.us/ http://message.wftx.us/ =================================== Use Outlook Express?... Get OE_Quotefix: It will strip signature out and more http://home.in.tum.de/~jain/software/oe-quotefix/ =================================== Keep a back up of your OE settings and folders with OEBackup: http://www.oehelp.com/OEBackup/Default.aspx ===================================