Re: NDR when sending mail to a domain

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Thanks for yout answere Nathan:

1- I have contacted with the administrator of the concerned domain, an he
answere there is a miconfiguration in my server (of course). As long as i
know, by testig with telnet to smtp port, they have an exchange 2003 server.

2- I use DNS.

3- "smtp * 1" is the unique line.

4- Officescan CSM (wich is well testen in SBS environement)

5- This option is empty

6- Id'ont understand if you are talking about the local DNS server (In the
sbs2003 machine) or the DNS records hosted in my isp where i have configured
MX record for my mail server.

7- This week end i will enable the smtp logging and send a test message to
faulty domain. Moore on this on monday.

Thanks again for your help.

"Nathan Liu [MSFT]" <v-natliu@xxxxxxxxxxxxxxxxxxxx> escribió en el mensaje
news:jR1ycC5gFHA.944@xxxxxxxxxxxxxxxxxxxxxxxx
> 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
> Get Secure! - www.microsoft.com/security
> =====================================================
> When responding to posts, please "Reply to Group" via your newsreader so
> that others may learn and benefit from your issue.
> =====================================================
> This posting is provided "AS IS" with no warranties, and confers no
> rights.
>
> --------------------
>>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
>>X-MSMail-Priority: Normal
>>X-Newsreader: Microsoft Outlook Express 6.00.2900.2527
>>X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2527
>>X-RFC2646: Format=Flowed; Original
>>Message-ID: <u$vlWwkgFHA.1948@xxxxxxxxxxxxxxxxxxxx>
>>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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