Defect #31939

Emails are dropped after timeout

Added by Michael Gerz over 3 years ago. Updated about 2 years ago.

Status:ClosedStart date:
Priority:NormalDue date:
Assignee:-% Done:


Category:Email notifications
Target version:-
Resolution:Invalid Affected version:4.0.4


Redmine 4.0.x uses ActiveMailer to send emails asynchronously. In my configuration, I am also using ActiveJob::QueueAdapters::AsyncAdapter.

On my server, I am facing the odd situation that, when notifying the projects users, the initial emails are rendered and sent within about 100ms. However, after 8-10 emails, ActiveJob reports a series of email delivery problems because the execution has expired (after 30sec each). Unfortunately, I am not able to figure out (a) what causes the timeout (the Redmine server or the Mail server?) and (b) how to modify the 30sec timeout value.

In any case, it would be very helpful if Redmine didn't drop emails that cannot be delivered instantly but instead makes a retry after a certain period of time. (Imagine that a mail server may be offline temporarily!)

Does anyone have an idea on how to implement such a "retry-after-x-seconds" approach? Thanks in advance!


#1 Updated by Michael Gerz about 2 years ago

  • Status changed from New to Resolved

Our mail server considered the quick sending of hundreds of email as a DoS attack.

Adding a local MTA solved the problem.

=> closing ticket

#2 Updated by Go MAEDA about 2 years ago

  • Status changed from Resolved to Closed
  • Resolution set to Invalid

Thank you for your feedback. Closing.

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