Exchange 2013 SMTP Relay Issue


  • Hello Exchange experts,

    One of my internal servers auto-sends out email reports to the external users and one of their DL. Out of 5 reports, the external users are receiving two of them without any issue. I have turned on the protocol logging and I am able to see these two reports handed over to the external email server successfully. Three reports which the external users are not receiving I also cannot see it on the smtpsend log either. The only difference is that the two reports that the external users are getting does not contain one of their distribution list whereas the other three reports does.

    I tried sending test message from my outlook to their DL and I can see email being handed over successfully on the log.

    My question is why the report from my internal server containing their DL is not going through.

    Any help would be appreciated.


    13 มิถุนายน 2561 16:57