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RecipientStatus : {452 4.3.1 Insufficient system resources} for (SMTP Relay to Remote AD Site) RRS feed

  • Question

  • Has someone seen this issue?

    I have a mixed environment with Exchange 2010 and 2013. I am currently working on getting Exchange 2013 up and running in the environment. Exchange 2010 is fully functional. Here is the issue I am having. 

    Here is how the emails are flowing. I have a primary site and a DR site. 

    1) Emails from my SMTP Gateway hit the Exchange 2010 CAS Server (Receive Connector)
    2) Email goes to Exchange 2013 CAS Server located at the DR Site (SMTP Relay to Remote AD Site)
    3) RecipientStatus         : {452 4.3.1 Insufficient system resources}
    ConnectorId             : Intra-Organization SMTP Send Connector
    ClientHostname          : Exchange 2010 CAS
    ServerIp                : IP
    ServerHostname          : Exchange 2013 CAS
    SourceContext           :
    ConnectorId             : Intra-Organization SMTP Send Connector
    Source                  : SMTP
    EventId                 : DEFER
    InternalMessageId       : 10
    MessageId               :
    Recipients              :
    RecipientStatus         : {452 4.3.1 Insufficient system resources}
    TotalBytes              : 3844
    RecipientCount          : 1

    4) Exchange 2010 (Retry)
    5) Email goes to Exchange 2013 CAS Server located at the DR Site (SMTP Relay to Remote AD Site)
    6) RecipientStatus         : {452 4.3.1 Insufficient system resources}
    ConnectorId             : Intra-Organization SMTP Send Connector
    7) Exchange 2010 (Retry)
    8) Email sends through Exchange 2010 CAS Server

    ServerHostname          : Exchange 2010 CAS Server
    SourceContext           :
    ConnectorId             : Intra-Organization SMTP Send Connector
    Source                  : SMTP
    EventId                 : SEND
    InternalMessageId       10
    MessageId               :
    Recipients              :
    RecipientStatus         : {250 2.1.5 Recipient OK}

    I have engaged Microsoft and there are no indications of Back Pressure and no events in the Event Viewer indication errors. The CAS Server currently has 8 GB of memory which is enough because the CAS server is currently doing nothing because I'm still using Exchange 2010 in the environment. This only happens during (SMTP Relay to Remote AD Site).

    Tuesday, February 17, 2015 1:58 PM

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