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Exchange 2013 to 2010, email stuck in queue when send to large distribution group

    Question

  • Hi,

    We have a exchange 2010 sp3 cu10 and exchange 2013 cu9 and migrate some user from 2010 to 2013

    When exchange 2010 user send to  a distribution group (which all members still in 2010), it works

    But when exchange 2013 user send to distribution group:

    - if the group only have few memebers, it can send to target mailbox

    - if the group have many memebers (more than 1000), email will stuck in exchange 2013 and cannot route to exchange 2010. The error is "421 4.4.1 Connection time out"

    Image Image

    Tried to change the receive connector timeout setting, and increase recipient limit by set-transportservices command but still have problem

    Any idea?

    Thanks


    Andy Chong

    Thursday, November 5, 2015 8:50 AM

Answers

  • Hi Chongtsz,

    Thank you for your question.

    When we send email to a distribution group, it will be considered as a recipient. We could check if there is NDR when we could not send email to distribution group with more than 1000 recipients. Then check if there are any transport rules on Exchange 2013 or Exchange 2010 to block it.

    Then we could disable firewall on Exchange 2013 and Exchange 2010  for testing, or disable A/V to check if the issue persist.

    We could run the following command on Exchange 2013 to make sure all server components are active.

    Get-ServerComponnentState –Identity <servername>

    Then we restart “Microsoft Exchange Transport” service on Exchange 2013 and Exchange 2010 to check if the issue persist.

    Please check if there are any errors in application on Exchange 2013 when the message get stuck.

    Best Regard,

    Jim Xu


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

    Jim Xu
    TechNet Community Support

    Friday, November 6, 2015 7:58 AM
    Moderator

All replies

  • Restart MS Exchange Transport Service and try again.
    Thursday, November 5, 2015 10:22 AM
  • Hi Chongtsz,

    Thank you for your question.

    When we send email to a distribution group, it will be considered as a recipient. We could check if there is NDR when we could not send email to distribution group with more than 1000 recipients. Then check if there are any transport rules on Exchange 2013 or Exchange 2010 to block it.

    Then we could disable firewall on Exchange 2013 and Exchange 2010  for testing, or disable A/V to check if the issue persist.

    We could run the following command on Exchange 2013 to make sure all server components are active.

    Get-ServerComponnentState –Identity <servername>

    Then we restart “Microsoft Exchange Transport” service on Exchange 2013 and Exchange 2010 to check if the issue persist.

    Please check if there are any errors in application on Exchange 2013 when the message get stuck.

    Best Regard,

    Jim Xu


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

    Jim Xu
    TechNet Community Support

    Friday, November 6, 2015 7:58 AM
    Moderator