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Mail Queue and over quota messages

Discussion in 'E-mail Discussion' started by sparek-3, May 20, 2005.

  1. sparek-3

    sparek-3 Well-Known Member

    Aug 10, 2002
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    We're having a mail queue issue on one of our servers. It seems that someone is sending spam to accounts on the server, for example say the domain They are using a fake yahoo address as the return message. The domain is is over their quota. What appears to be happening, is because the yahoo address is fake, the message stating that the user is over their quota is staying in our mail queue.

    I thought that the "Discard emails for users who have exceeded their quota instead of keeping them in the queue." option in the WHM would prevent this, but I guess this only pertains to the original message (the spam message). Instead of it sitting in our queue, it is deleted. Is there anyway to prevent the return messages from filling up the queue? There may not be a way, but I thought there might be some exim experts that have worked with this problem before.

  2. chirpy

    chirpy Well-Known Member

    Jun 15, 2002
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    Not that I've found (and you're right about the setting, it unfortunately does only pertain to the original email). I've searched the exim mailing list on this subject before and the only real answer was to play with the bounce retention settings, for example setting the following in the first textarea of the WHM > Exim Configuration Editor > Advanced Mode>

    timeout_frozen_after = 2d
    ignore_bounce_errors_after = 12h

    But don't set those too low. Another solution might be to ensure that the domain has it'd Default Address (catchall) set to :fail: and use a dictionary attack ACL:
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