RE: NDR when sending mail to a domain
- From: v-natliu@xxxxxxxxxxxxxxxxxxxx (Nathan Liu [MSFT])
- Date: Fri, 08 Jul 2005 07:42:30 GMT
Hello Acon,
Thank you for posting in the SBS newsgroup.
According to your description, I understand that you received a NDR when
you are sending mail to a specific domain. If I have misunderstood your
concern, please don't hesitate to let me know.
To narrow down this issue, please answer and perform the following
questions and steps:
1. Since this issue occurs if a looping condition was detected, and this
issue only occurs on the specific domain, please also contact the specific
domain administrator to check the relevant configuration of the Exchange
Server.
2. If you forward all mail through smarthost, please try to use DNS to
route the outgoing email, and then try again. Please check if the issue can
be re-produced.
3. As you mentioned, you already have "smtp * 1" in the address space
tab. If there is other items in the Address Space tab of the SmallBusiness
SMTP connector Properties, please delete it , and then check if the issue
can be re-produced.
4. If there are other third-party software on the SBS Server, please
temporarily uninstall it, and then try again.
5. Based on my research, this issue may occurs if the SBS Server is
configured to forward mail either to itself or another server that may be
configured to forward it's unresolved recipients to this server, on the
"Forward all mail with unresolved recipients to host" option of the Default
SMTP Virtual Server properties.
6. If the DNS server has two same records, the problem may occur due the
message will be sent to two targets at the same time and the loop will
occur.
7. Please refer to the below steps to enable SMTP logging:
1) Open the properties page of the Default SMTP Virtual Server in
Exchange System Manager.
2) On the General tab, check the "Enable logging" box.
3) Click Properties, click the Extended Properties tab and check all
the boxes on the list.
4) Click OK twice.
5) Stop and restart the SMTP virtual server.
6) Reproduce the issue.
7) Stop the SMTP virtual server.
8) Go to the C:\WINDOWS\system32\LogFiles\SMTPSVC1 folder and check
the latest two (if there are many) log files.
I am appreciated your time and cooperation. If anything is unclear, please
feel free to let me know. I am looking forward to hearing from you.
Best regards,
Nathan Liu (MSFT)
Microsoft CSS Online Newsgroup Support
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--------------------
>From: "acon" <ezacon@xxxxxxxxxxx>
>Subject: NDR when sending mail to a domain
>Date: Wed, 6 Jul 2005 18:59:31 +0200
>Lines: 34
>X-Priority: 3
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>Newsgroups: microsoft.public.windows.server.sbs
>NNTP-Posting-Host: 98.red-217-127-189.pooles.rima-tde.net 217.127.189.98
>Path: TK2MSFTNGXA01.phx.gbl!TK2MSFTNGP08.phx.gbl!TK2MSFTNGP12.phx.gbl
>Xref: TK2MSFTNGXA01.phx.gbl microsoft.public.windows.server.sbs:133498
>X-Tomcat-NG: microsoft.public.windows.server.sbs
>
>I have a SBS2003 with ISA. I have not installed SBS SP1 (at the moment).
>When users send mails to any address in a domain, they get a NDR. All
other
>domains are OK. The domain we cant contact, uses exchange server too.
> The NDR message is: (Translated from spanish)
>The following recipient(s) could not be reached:
>
> <recipientName> on <date and time>
> A configuration error in the e-mail system caused the message
to
>bounce between two servers or to be forwarded between two recipients.
>Contact system administrator.
><server.com#5.3.5>
>
>At the same time i get this error in evnt log:
>Event: 3017
>Source: MSExchangeTransport
>
>A non-delivery report with a status code of 5.3.5 was generated for
>recipient rfc822;<user>@<domain> (Message-ID <ID>).
>
>Causes: A looping condition was detected. (The server is configured to
route
>mail back to itself). If you have multiple SMTP Virtual Servers configured
>on your Exchange server, make sure they are defined by a unique incoming
>port and that the outgoing SMTP port configuration is valid to avoid
looping
>between local virtual servers.
>
>Solution: Check the configuration of the virtual serverÆs connectors for
>loops and ensure each virtual server is defined by a unique incoming port.
>
>I have read all info related to this event in eventid.net, but in SMTP
>Conector properties, in the address space tab i already have "smtp * 1".
>
>Any idea??
>
>
>
.
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