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Force queue emails in exchange

    Question

  • Dears,

    We have an application that sends a huge load of emails. 

    The application relay through an exchange 2010. We want to use office 365 also to relay emails. Therefore we created a send connector and receive connector between exchange and office 365, but the thing is that the mailbox passed the Office 365 limit which is 30 emails per minute per mailbox.

    Therefore we are searching for a solution to queue the emails in exchange and limit it to 30 emails.

    So in each minute the exchange should send 29 emails and the other emails will be queued for delivery.

    Please advise.

    Best Regards,

    Tuesday, April 9, 2019 11:33 AM

All replies

  • Dears,

    We have an application that sends a huge load of emails. 

    The application relay through an exchange 2010. We want to use office 365 also to relay emails. Therefore we created a send connector and receive connector between exchange and office 365, but the thing is that the mailbox passed the Office 365 limit which is 30 emails per minute per mailbox.

    Therefore we are searching for a solution to queue the emails in exchange and limit it to 30 emails.

    So in each minute the exchange should send 29 emails and the other emails will be queued for delivery.

    Please advise.

    Best Regards,

    There is no real good way to do that. Why not simply let Office 365 throttle the connection?

    P.S. Sending "huge load of emails" from an application is not what Office 365 is intended for.

    Tuesday, April 9, 2019 12:17 PM
  • if we changed the smtp on the application to send through office 365 directly, we will face the same issue.

    there is no solution for it?

    Best Regards,

    Tuesday, April 9, 2019 12:26 PM
  • if we changed the smtp on the application to send through office 365 directly, we will face the same issue.

    there is no solution for it?

    Best Regards,

    Other than not using Office 365 to relay large amounts of application email, no.
    Tuesday, April 9, 2019 12:48 PM
  • Hi Ros,

    As Andy stated, we cannot bypass the 30 messages per minute limit in Exchange online. Just a guess, is it possible to limit the message sending rate from the applications side? I'm not aware of workaround on the Exchange side.

    Regards,
    Steve Fan


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    Wednesday, April 10, 2019 7:34 AM
    Moderator
  • Hello,

    We are searching to do this from the exchange side as the application is a little bit old.

    Can't we queue the emails from exchange?

    Best Regards,

    Wednesday, April 10, 2019 8:58 AM
  • Hello,

    We are searching to do this from the exchange side as the application is a little bit old.

    Can't we queue the emails from exchange?

    Best Regards,

    As mentioned before, no. Office 365 is actually queuing it for you by backing off the connection
    Wednesday, April 10, 2019 1:57 PM
  • Hi Ros,

    Any further query here? As mentioned, I'm not aware of a workaround on the Exchange side if using Office 365.

    Regards,
    Steve Fan


    Please remember to mark the replies as answers if they helped. If you have feedback for TechNet Subscriber Support, contact tnsf@microsoft.com.


    Click here to learn more. Visit the dedicated forum to share, explore and talk to experts about Microsoft Teams.

    Monday, April 15, 2019 10:08 AM
    Moderator