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Problem receiving from one domain RRS feed

  • Question

  • Background: We have an SBS2003 server configured to send and receive email. All has been working fine until about 2-3 months ago when my users stopped receiving email from a specific domain.

    Additional Info: The way that we are setup is as follows. A third party gets our email, performs the neccessary spam checks and forwards them to our server. There is no A/V or any additional spam filtering occuring on our server.

    All PTR/MX/A records are correct as far as I know. PTR from my server IP goes to mail.myservercom. A record and MX recordgoes to filter IP.

    The sender gets the following NDR

    Could not deliver the message in the time limit specified.  Please retry or contact your administrator.

                <sender.server.LOCAL #4.4.7>

    Is there anything that I can check or do on my side to fix this?

    Thanks
    Monday, September 10, 2012 3:21 PM

All replies

  • Please get the full NDR from them, it could be an issue on their side, maybe they have a specific connector with incorrect smarthost or DNS going to your domain. Could be many reasons.

    1. Get the full NDR and post back.

    2. You can check your SMTP logs and message tracking, prob won't show anything, I thinking their mail server never even hit your providers mail server.

    3. You can request from your third party mail provider to check their smtp logs.

    I would start with number 1 to eliminate if its an issue with the sending company first, that's my hunch.


    James Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com

    Monday, September 10, 2012 4:40 PM
  • By full NDR you mean with the internet headers on it? If so I can provide that as soon as I head back to the office.

    Monday, September 10, 2012 4:44 PM
  • Actually I wouldn't worry about posting the NDR or the headers, the NDR you posted is just their mail server saying message to domain timed out, so there will be no further information from the NDR nor the headers. I would start with the suggestions I mentioned.


    James Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com

    Monday, September 10, 2012 4:50 PM
  • I started the smtp logging and I'll let you know how it goes.
    Tuesday, September 11, 2012 8:23 AM
    • Edited by Castinlu Thursday, September 13, 2012 3:13 AM
    Thursday, September 13, 2012 3:12 AM
  • I have at least 48 hours of SMTP log files. What should I be looking for? I assume that I should be looking for any attempts to receive email from the "problematic" domain correct?
    Thursday, September 13, 2012 7:08 AM
  • That's correct just narrow focus on the time they attempted to send, sender\recipient and subject. If you don't see any entries (which I"m expecting) than they never sent it. It would likely be an issue on their end, maybe they have a bad DNS\connector for your domain and thus could never find your mail server in the first place.

    James Chong MCITP | EA | EMA; MCSE | M+, S+ Security+, Project+, ITIL msexchangetips.blogspot.com

    Thursday, September 13, 2012 1:13 PM
  • As you were expecting, there was no entry in the log files from them.

    I have asked both the sender and the third party filter to check, if possible, their SMTP logs so as to see where the email stops.

    If there is a problem with the senders DNS\connector how can I assist them to fix it?

    Thanks

    Thursday, September 13, 2012 1:54 PM
  • hi,

    >>>If there is a problem with the senders DNS\connector how can I assist them to fix it?

    If their send connector has problem, i think you can ask them to create new send connnector which is used to send message to your exchange, set your hub as the smart host and set your domian as the address space. So each message sent to your exchange will pass through the send connector and delivered by their and your hub server.

    hope can help you

    thanks,


    CastinLu

    TechNet Community Support

    Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact tnmff@microsoft.com



    • Edited by Castinlu Friday, September 14, 2012 7:49 AM
    Friday, September 14, 2012 7:48 AM
  • hi,

    Any update?

    thanks,


    CastinLu

    TechNet Community Support

    Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contacttnmff@microsoft.com


    • Edited by Castinlu Monday, September 17, 2012 1:34 AM
    Monday, September 17, 2012 1:33 AM
  • I'm having some issues getting in touch with their IT department in order to try what you have recommended.

    As soon as I get in touch with them I'll let you know how it goes.

    Tuesday, September 18, 2012 6:40 AM
  • hi,

    If you will, please first mark as answer.

    If your issue still come back, you can open a new post or reopen the thread.

    thanks,


    CastinLu

    TechNet Community Support

    Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contacttnmff@microsoft.com


    • Edited by Castinlu Wednesday, September 19, 2012 1:31 AM
    Wednesday, September 19, 2012 1:30 AM
  • Ok I have some new information.

    Apparently the problem is not just with receiving from the "problematic" domain but also sending to it.

    I've asked my users to send some test email over the next few hours so that I can have a look at the log files to see if there is any indication of where the fault is.

    Wednesday, September 19, 2012 4:27 PM
  • As far as I can tell from the SMTP logs it appears that the email leaves my server with no errors. Can I paste the logs here so that someone with more knowledge than me can have a look at them?
    Thursday, September 20, 2012 8:01 AM
    • Edited by Castinlu Monday, September 24, 2012 2:37 AM
    Monday, September 24, 2012 2:36 AM