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Thread: Smarthost fails to connect to ISP intermittently

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Smarthost fails to connect to ISP intermittently
northwindccohio 27.06.2007 13:00:12
I have a SBS 2003 R2 system that was a disaster recovery. After resolving
some LegacyDN issues to get the Exchange database to work again, I am running
into mail flow problems to the smarthost ISP. We use a smarthost because we
have some clients who do not resolve through the local DNS on the server
consistently. It is too critical to my client to not get these e-mails sent.
it has been working with the following configuration. We host the Exchange
server as the primary Mail Exchanger on a dynamic address with use of a
dynalias configuration. It has been working until the ISA connectivity
started failing for the smarthost SMTP verification. Now I can get no mail to
go out through the smarthost. If I go back to strictly DNS, I still get the
messages stuck in the queue that will not resolve. I was able to telnet to
the SMTP server of the ISP before this issue came. Now I cannot, but I can
ping and complete nslookup successfully. Is there an issue on the ISP's end
that I need to resolve? I think I need to escalate my support with them as
they are limited in these experiences for a dynamic address.
--
Gary[ at ]northwindccohio
RE: Smarthost fails to connect to ISP intermittently
v-terliu[ at ]online.microsoft.com (Terence Liu [MSFT]) 28.06.2007 04:36:53
Hello Gary,

Thank you for posting here.

According to your description, I understand that you cannot send mail to
your ISP's smarthost. If I have misunderstood the problem, please don't
hesitate to let me know.

I agree with you, this is mostly like the ISP block SMTP request from the
dynamic address. Please contact your ISP to confirm it.

Meanwhile, we can run the CEICW on SBS to ensure the configuration on SBS
is correct:

Go through the follow KB and Rerun CEICW again carefully.

How to configure Internet access in Windows Small Business Server 2003
http://support.microsoft.com/kb/825763/en-us

Detailed steps for your reference:

1. Open Server Management.
2. Click To Do List.
3. Click Connect to the Internet.
4. Proceed to the "Firewall" page and select "Enable Firewall".
5. On the "Services Configuration" page, make sure that "E-mail" service
has been checked.
6. On the "Web Services Configuration" page, check the web services that
you want to publish.
7. On the "Web Server Certificate" page, choose "Create a new Web server
certificate" and key in your public domain name in the box.
8. On the "Internet E-mail" page, choose "Enable Internet e-mail".
9. On the "E-mail Delivery Method" page, choose the 2nd radio box since
you're using a Smart Host, then key in the IP address of your smart host.
10. If you're using POP3 connector, please enable POP3 Connector.
11. Key in your e-mail domain name in "Email Domain Name" page.
12. Configure POP3 account and scheduling settings, then finish the wizard.

If we cannot resolve the issue after we perform the above steps, please
kindly help me collect some information for further investigation:

1. Can you telnet port 25 of Smart Host from SBS when the email hang in the
queue?

2. Does the mail from internal to internal work fine?

Hope these steps will give you some help.

Thanks and have a nice day!

Best regards,

Terence Liu(MSFT)

Microsoft CSS Online Newsgroup Support

Get Secure! - www.microsoft.com/security

=====================================================
This newsgroup only focuses on SBS technical issues. If you have issues
regarding other Microsoft products, you'd better post in the corresponding
newsgroups so that they can be resolved in an efficient and timely manner.
You can locate the newsgroup here:
http://www.microsoft.com/communities/newsgroups/en-us/default.aspx

When opening a new thread via the web interface, we recommend you check the
"Notify me of replies" box to receive e-mail notifications when there are
any updates in your thread. When responding to posts via your newsreader,
please "Reply to Group" so that others may learn and benefit from your
issue.

Microsoft engineers can only focus on one issue per thread. Although we
provide other information for your reference, we recommend you post
different incidents in different threads to keep the thread clean. In doing
so, it will ensure your issues are resolved in a timely manner.

For urgent issues, you may want to contact Microsoft CSS directly. Please
check http://support.microsoft.com for regional support phone numbers.

Any input or comments in this thread are highly appreciated.
=====================================================

This posting is provided "AS IS" with no warranties, and confers no rights.

--------------------
| Thread-Topic: Smarthost fails to connect to ISP intermittently
| thread-index: Ace4uxlP/V9F1zqOQSidBw8m+1w1Lg==
| X-WBNR-Posting-Host: 207.46.193.207
| From: =?Utf-8?B?bm9ydGh3aW5kY2NvaGlv?=
<northwindccohio[ at ]discussions.microsoft.com>
| Subject: Smarthost fails to connect to ISP intermittently
| Date: Wed, 27 Jun 2007 06:00:12 -0700
| Lines: 17
| Message-ID: <F3D4F391-B130-4864-91F9-8485B946EB45[ at ]microsoft.com>
| MIME-Version: 1.0
| Content-Type: text/plain;
| charset="Utf-8"
| Content-Transfer-Encoding: 7bit
| X-Newsreader: Microsoft CDO for Windows 2000
| Content-Class: urn:content-classes:message
| Importance: normal
| Priority: normal
| X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.2826
| Newsgroups: microsoft.public.windows.server.sbs
| Path: TK2MSFTNGHUB02.phx.gbl
| Xref: TK2MSFTNGHUB02.phx.gbl microsoft.public.windows.server.sbs:46614
| NNTP-Posting-Host: tk2msftsbfm01.phx.gbl 10.40.244.148
| X-Tomcat-NG: microsoft.public.windows.server.sbs
|
| I have a SBS 2003 R2 system that was a disaster recovery. After resolving
| some LegacyDN issues to get the Exchange database to work again, I am
running
| into mail flow problems to the smarthost ISP. We use a smarthost because
we
| have some clients who do not resolve through the local DNS on the server
| consistently. It is too critical to my client to not get these e-mails
sent.
| it has been working with the following configuration. We host the
Exchange
| server as the primary Mail Exchanger on a dynamic address with use of a
| dynalias configuration. It has been working until the ISA connectivity
| started failing for the smarthost SMTP verification. Now I can get no
mail to
| go out through the smarthost. If I go back to strictly DNS, I still get
the
| messages stuck in the queue that will not resolve. I was able to telnet
to
| the SMTP server of the ISP before this issue came. Now I cannot, but I
can
| ping and complete nslookup successfully. Is there an issue on the ISP's
end
| that I need to resolve? I think I need to escalate my support with them
as
| they are limited in these experiences for a dynamic address.
| --
| Gary[ at ]northwindccohio
|

RE: Smarthost fails to connect to ISP intermittently
northwindccohio 28.06.2007 12:28:00
Hi Terence,
After running CEICW their is no change in mail flow out or connectivity to
the smarthost smtp address. I am unable to telnet to the ISP's smtp server
address. Internal mail flow and receiving mail has not been a problem during
this time. As I said in my description, I can get some messages to go out
using DNS resolution, but because of the dynamic address a lot of DNS servers
refuse to accept messages and bounce them back to us. These are then the
messages that are stuck in the queue for the Smarthost after they are
attempted to be sent to the Smarthost SMTP address. I get event ID error 7010
for the Exchange Transport service. Any other thoughts let me know. Thanks.

--
Gary[ at ]northwindccohio


"Terence Liu [MSFT]" wrote:

[Quoted Text]
> Hello Gary,
>
> Thank you for posting here.
>
> According to your description, I understand that you cannot send mail to
> your ISP's smarthost. If I have misunderstood the problem, please don't
> hesitate to let me know.
>
> I agree with you, this is mostly like the ISP block SMTP request from the
> dynamic address. Please contact your ISP to confirm it.
>
> Meanwhile, we can run the CEICW on SBS to ensure the configuration on SBS
> is correct:
>
> Go through the follow KB and Rerun CEICW again carefully.
>
> How to configure Internet access in Windows Small Business Server 2003
> http://support.microsoft.com/kb/825763/en-us
>
> Detailed steps for your reference:
>
> 1. Open Server Management.
> 2. Click To Do List.
> 3. Click Connect to the Internet.
> 4. Proceed to the "Firewall" page and select "Enable Firewall".
> 5. On the "Services Configuration" page, make sure that "E-mail" service
> has been checked.
> 6. On the "Web Services Configuration" page, check the web services that
> you want to publish.
> 7. On the "Web Server Certificate" page, choose "Create a new Web server
> certificate" and key in your public domain name in the box.
> 8. On the "Internet E-mail" page, choose "Enable Internet e-mail".
> 9. On the "E-mail Delivery Method" page, choose the 2nd radio box since
> you're using a Smart Host, then key in the IP address of your smart host.
> 10. If you're using POP3 connector, please enable POP3 Connector.
> 11. Key in your e-mail domain name in "Email Domain Name" page.
> 12. Configure POP3 account and scheduling settings, then finish the wizard.
>
> If we cannot resolve the issue after we perform the above steps, please
> kindly help me collect some information for further investigation:
>
> 1. Can you telnet port 25 of Smart Host from SBS when the email hang in the
> queue?
>
> 2. Does the mail from internal to internal work fine?
>
> Hope these steps will give you some help.
>
> Thanks and have a nice day!
>
> Best regards,
>
> Terence Liu(MSFT)
>
> Microsoft CSS Online Newsgroup Support
>
> Get Secure! - www.microsoft.com/security
>
> =====================================================
> This newsgroup only focuses on SBS technical issues. If you have issues
> regarding other Microsoft products, you'd better post in the corresponding
> newsgroups so that they can be resolved in an efficient and timely manner.
> You can locate the newsgroup here:
> http://www.microsoft.com/communities/newsgroups/en-us/default.aspx
>
> When opening a new thread via the web interface, we recommend you check the
> "Notify me of replies" box to receive e-mail notifications when there are
> any updates in your thread. When responding to posts via your newsreader,
> please "Reply to Group" so that others may learn and benefit from your
> issue.
>
> Microsoft engineers can only focus on one issue per thread. Although we
> provide other information for your reference, we recommend you post
> different incidents in different threads to keep the thread clean. In doing
> so, it will ensure your issues are resolved in a timely manner.
>
> For urgent issues, you may want to contact Microsoft CSS directly. Please
> check http://support.microsoft.com for regional support phone numbers.
>
> Any input or comments in this thread are highly appreciated.
> =====================================================
>
> This posting is provided "AS IS" with no warranties, and confers no rights.
>
> --------------------
> | Thread-Topic: Smarthost fails to connect to ISP intermittently
> | thread-index: Ace4uxlP/V9F1zqOQSidBw8m+1w1Lg==
> | X-WBNR-Posting-Host: 207.46.193.207
> | From: =?Utf-8?B?bm9ydGh3aW5kY2NvaGlv?=
> <northwindccohio[ at ]discussions.microsoft.com>
> | Subject: Smarthost fails to connect to ISP intermittently
> | Date: Wed, 27 Jun 2007 06:00:12 -0700
> | Lines: 17
> | Message-ID: <F3D4F391-B130-4864-91F9-8485B946EB45[ at ]microsoft.com>
> | MIME-Version: 1.0
> | Content-Type: text/plain;
> | charset="Utf-8"
> | Content-Transfer-Encoding: 7bit
> | X-Newsreader: Microsoft CDO for Windows 2000
> | Content-Class: urn:content-classes:message
> | Importance: normal
> | Priority: normal
> | X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.2826
> | Newsgroups: microsoft.public.windows.server.sbs
> | Path: TK2MSFTNGHUB02.phx.gbl
> | Xref: TK2MSFTNGHUB02.phx.gbl microsoft.public.windows.server.sbs:46614
> | NNTP-Posting-Host: tk2msftsbfm01.phx.gbl 10.40.244.148
> | X-Tomcat-NG: microsoft.public.windows.server.sbs
> |
> | I have a SBS 2003 R2 system that was a disaster recovery. After resolving
> | some LegacyDN issues to get the Exchange database to work again, I am
> running
> | into mail flow problems to the smarthost ISP. We use a smarthost because
> we
> | have some clients who do not resolve through the local DNS on the server
> | consistently. It is too critical to my client to not get these e-mails
> sent.
> | it has been working with the following configuration. We host the
> Exchange
> | server as the primary Mail Exchanger on a dynamic address with use of a
> | dynalias configuration. It has been working until the ISA connectivity
> | started failing for the smarthost SMTP verification. Now I can get no
> mail to
> | go out through the smarthost. If I go back to strictly DNS, I still get
> the
> | messages stuck in the queue that will not resolve. I was able to telnet
> to
> | the SMTP server of the ISP before this issue came. Now I cannot, but I
> can
> | ping and complete nslookup successfully. Is there an issue on the ISP's
> end
> | that I need to resolve? I think I need to escalate my support with them
> as
> | they are limited in these experiences for a dynamic address.
> | --
> | Gary[ at ]northwindccohio
> |
>
>
RE: Smarthost fails to connect to ISP intermittently
v-terliu[ at ]online.microsoft.com (Terence Liu [MSFT]) 29.06.2007 09:46:36
Hello Gary,

Thank you for kind update.

From your description, you cannot telnet your smart host when you cannot
send email outbound. This is mostly like the ISP smart host issue. There
are 2 mostly scenarios:

1. The ISP smart host block your SMTP request due to dynamic IP address.
2. The ISP smart host request authentication for SMTP request.

Therefore, please contact your ISP to check the smart host settings.

Hope the info will give you some help.

Thanks and have a nice day!

Best regards,

Terence Liu(MSFT)

Microsoft CSS Online Newsgroup Support

Get Secure! - www.microsoft.com/security

=====================================================
This newsgroup only focuses on SBS technical issues. If you have issues
regarding other Microsoft products, you'd better post in the corresponding
newsgroups so that they can be resolved in an efficient and timely manner.
You can locate the newsgroup here:
http://www.microsoft.com/communities/newsgroups/en-us/default.aspx

When opening a new thread via the web interface, we recommend you check the
"Notify me of replies" box to receive e-mail notifications when there are
any updates in your thread. When responding to posts via your newsreader,
please "Reply to Group" so that others may learn and benefit from your
issue.

Microsoft engineers can only focus on one issue per thread. Although we
provide other information for your reference, we recommend you post
different incidents in different threads to keep the thread clean. In doing
so, it will ensure your issues are resolved in a timely manner.

For urgent issues, you may want to contact Microsoft CSS directly. Please
check http://support.microsoft.com for regional support phone numbers.

Any input or comments in this thread are highly appreciated.
=====================================================

This posting is provided "AS IS" with no warranties, and confers no rights.

--------------------
| Thread-Topic: Smarthost fails to connect to ISP intermittently
| thread-index: Ace5f8Qe5bLTE1s2R5S3dX4Uaw/65g==
| X-WBNR-Posting-Host: 207.46.19.168
| From: =?Utf-8?B?bm9ydGh3aW5kY2NvaGlv?=
<northwindccohio[ at ]discussions.microsoft.com>
| References: <F3D4F391-B130-4864-91F9-8485B946EB45[ at ]microsoft.com>
<ZLYy33TuHHA.360[ at ]TK2MSFTNGHUB02.phx.gbl>
| Subject: RE: Smarthost fails to connect to ISP intermittently
| Date: Thu, 28 Jun 2007 05:28:00 -0700
| Lines: 156
| Message-ID: <248B3961-84DB-468F-AA2B-E9F03E4C81BC[ at ]microsoft.com>
| MIME-Version: 1.0
| Content-Type: text/plain;
| charset="Utf-8"
| Content-Transfer-Encoding: 7bit
| X-Newsreader: Microsoft CDO for Windows 2000
| Content-Class: urn:content-classes:message
| Importance: normal
| Priority: normal
| X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.2826
| Newsgroups: microsoft.public.windows.server.sbs
| Path: TK2MSFTNGHUB02.phx.gbl
| Xref: TK2MSFTNGHUB02.phx.gbl microsoft.public.windows.server.sbs:46902
| NNTP-Posting-Host: tk2msftsbfm01.phx.gbl 10.40.244.148
| X-Tomcat-NG: microsoft.public.windows.server.sbs
|
| Hi Terence,
| After running CEICW their is no change in mail flow out or connectivity
to
| the smarthost smtp address. I am unable to telnet to the ISP's smtp
server
| address. Internal mail flow and receiving mail has not been a problem
during
| this time. As I said in my description, I can get some messages to go
out
| using DNS resolution, but because of the dynamic address a lot of DNS
servers
| refuse to accept messages and bounce them back to us. These are then the
| messages that are stuck in the queue for the Smarthost after they are
| attempted to be sent to the Smarthost SMTP address. I get event ID error
7010
| for the Exchange Transport service. Any other thoughts let me know.
Thanks.
|
| --
| Gary[ at ]northwindccohio
|
|
| "Terence Liu [MSFT]" wrote:
|
| > Hello Gary,
| >
| > Thank you for posting here.
| >
| > According to your description, I understand that you cannot send mail
to
| > your ISP's smarthost. If I have misunderstood the problem, please don't
| > hesitate to let me know.
| >
| > I agree with you, this is mostly like the ISP block SMTP request from
the
| > dynamic address. Please contact your ISP to confirm it.
| >
| > Meanwhile, we can run the CEICW on SBS to ensure the configuration on
SBS
| > is correct:
| >
| > Go through the follow KB and Rerun CEICW again carefully.
| >
| > How to configure Internet access in Windows Small Business Server 2003
| > http://support.microsoft.com/kb/825763/en-us
| >
| > Detailed steps for your reference:
| >
| > 1. Open Server Management.
| > 2. Click To Do List.
| > 3. Click Connect to the Internet.
| > 4. Proceed to the "Firewall" page and select "Enable Firewall".
| > 5. On the "Services Configuration" page, make sure that "E-mail"
service
| > has been checked.
| > 6. On the "Web Services Configuration" page, check the web services
that
| > you want to publish.
| > 7. On the "Web Server Certificate" page, choose "Create a new Web
server
| > certificate" and key in your public domain name in the box.
| > 8. On the "Internet E-mail" page, choose "Enable Internet e-mail".
| > 9. On the "E-mail Delivery Method" page, choose the 2nd radio box since
| > you're using a Smart Host, then key in the IP address of your smart
host.
| > 10. If you're using POP3 connector, please enable POP3 Connector.
| > 11. Key in your e-mail domain name in "Email Domain Name" page.
| > 12. Configure POP3 account and scheduling settings, then finish the
wizard.
| >
| > If we cannot resolve the issue after we perform the above steps, please
| > kindly help me collect some information for further investigation:
| >
| > 1. Can you telnet port 25 of Smart Host from SBS when the email hang in
the
| > queue?
| >
| > 2. Does the mail from internal to internal work fine?
| >
| > Hope these steps will give you some help.
| >
| > Thanks and have a nice day!
| >
| > Best regards,
| >
| > Terence Liu(MSFT)
| >
| > Microsoft CSS Online Newsgroup Support
| >
| > Get Secure! - www.microsoft.com/security
| >
| > =====================================================
| > This newsgroup only focuses on SBS technical issues. If you have issues
| > regarding other Microsoft products, you'd better post in the
corresponding
| > newsgroups so that they can be resolved in an efficient and timely
manner.
| > You can locate the newsgroup here:
| > http://www.microsoft.com/communities/newsgroups/en-us/default.aspx
| >
| > When opening a new thread via the web interface, we recommend you check
the
| > "Notify me of replies" box to receive e-mail notifications when there
are
| > any updates in your thread. When responding to posts via your
newsreader,
| > please "Reply to Group" so that others may learn and benefit from your
| > issue.
| >
| > Microsoft engineers can only focus on one issue per thread. Although we
| > provide other information for your reference, we recommend you post
| > different incidents in different threads to keep the thread clean. In
doing
| > so, it will ensure your issues are resolved in a timely manner.
| >
| > For urgent issues, you may want to contact Microsoft CSS directly.
Please
| > check http://support.microsoft.com for regional support phone numbers.
| >
| > Any input or comments in this thread are highly appreciated.
| > =====================================================
| >
| > This posting is provided "AS IS" with no warranties, and confers no
rights.
| >
| > --------------------
| > | Thread-Topic: Smarthost fails to connect to ISP intermittently
| > | thread-index: Ace4uxlP/V9F1zqOQSidBw8m+1w1Lg==
| > | X-WBNR-Posting-Host: 207.46.193.207
| > | From: =?Utf-8?B?bm9ydGh3aW5kY2NvaGlv?=
| > <northwindccohio[ at ]discussions.microsoft.com>
| > | Subject: Smarthost fails to connect to ISP intermittently
| > | Date: Wed, 27 Jun 2007 06:00:12 -0700
| > | Lines: 17
| > | Message-ID: <F3D4F391-B130-4864-91F9-8485B946EB45[ at ]microsoft.com>
| > | MIME-Version: 1.0
| > | Content-Type: text/plain;
| > | charset="Utf-8"
| > | Content-Transfer-Encoding: 7bit
| > | X-Newsreader: Microsoft CDO for Windows 2000
| > | Content-Class: urn:content-classes:message
| > | Importance: normal
| > | Priority: normal
| > | X-MimeOLE: Produced By Microsoft MimeOLE V6.00.3790.2826
| > | Newsgroups: microsoft.public.windows.server.sbs
| > | Path: TK2MSFTNGHUB02.phx.gbl
| > | Xref: TK2MSFTNGHUB02.phx.gbl microsoft.public.windows.server.sbs:46614
| > | NNTP-Posting-Host: tk2msftsbfm01.phx.gbl 10.40.244.148
| > | X-Tomcat-NG: microsoft.public.windows.server.sbs
| > |
| > | I have a SBS 2003 R2 system that was a disaster recovery. After
resolving
| > | some LegacyDN issues to get the Exchange database to work again, I am
| > running
| > | into mail flow problems to the smarthost ISP. We use a smarthost
because
| > we
| > | have some clients who do not resolve through the local DNS on the
server
| > | consistently. It is too critical to my client to not get these
e-mails
| > sent.
| > | it has been working with the following configuration. We host the
| > Exchange
| > | server as the primary Mail Exchanger on a dynamic address with use of
a
| > | dynalias configuration. It has been working until the ISA
connectivity
| > | started failing for the smarthost SMTP verification. Now I can get no
| > mail to
| > | go out through the smarthost. If I go back to strictly DNS, I still
get
| > the
| > | messages stuck in the queue that will not resolve. I was able to
telnet
| > to
| > | the SMTP server of the ISP before this issue came. Now I cannot, but
I
| > can
| > | ping and complete nslookup successfully. Is there an issue on the
ISP's
| > end
| > | that I need to resolve? I think I need to escalate my support with
them
| > as
| > | they are limited in these experiences for a dynamic address.
| > | --
| > | Gary[ at ]northwindccohio
| > |
| >
| >
|

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