Sidekiq 100% CPU usage and no mails


Hey, we currently experience the following problem:

  1. Someone tries to forward a mail to one of our user-defined mails for incoming mails.
    Now two things can happen:

  2. a) This mail never reaches the inbox of the group. It is shown under /admin/email/received but not linked to a conversation. When I try to recover the mail via the Data Explorer (see query below), most of the fields (topic, post, error, cc_addresses, rejection_message) are NULL. The mail is not shown under /admin/email/rejected.

    SELECT *
    FROM incoming_emails
    WHERE id = 796

    b) The CPU-usage of Sidekiq on the server reaches 100% but still says [0 of 5 busy] in htop.
    Furthermore the status of our jobs changes to QUEUED and sometimes the job Jobs::PollMailbox to RUNNING.

    Now when this happens, discourse completely stops to pull new mails until we reboot the server.

(Gerhard Schlager) #2

Could you send me the raw email that is failing via PM? We will look into it.

(Gerhard Schlager) #4

Thanks for providing a sample email.
This should be fixed by


Thank you!
We tested it again and can confirm that the problem did not occur anymore.