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Thread: Deferrals & Timeouts

  1. #1
    ekmeek is offline Active Member
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    May 2010
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    Default Deferrals & Timeouts

    We're experiencing a problem where we seem to have pretty random periods of postfix timing out when trying to deliver a message. This is causing lots of deferrals and delayed messages for our users. The hardest part in figuring this out is that it seems pretty random.

    I can send 10 messages to my gmail account which arrive immediately but then I send another and it's delayed for a few hours. Here's an example from our latest mail stats.

    26439 received
    42295 delivered
    0 forwarded
    954 deferred (5804 deferrals)
    679 bounced

    The Zimbra support team is telling us to check firewall settings. They all seem fine and if the firewall was blocking a specific port, wouldn't it be causing more of a problem, not this seemingly random one?

    Has anyone experienced anything similar to this? Any thoughts?

  2. #2
    phoenix is offline Zimbra Consultant & Moderator
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    Sep 2005
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    Vannes, France
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    Default

    What is happening on your server during these "random periods" that might be causing the problem? Any HD or network problems, any excessive CPU load? What are the specifications of your server, what HD subsystem are you using for Zimbra? Could it be an intermittent DNS resolution problem? Are all your DNS setting and hosts file correct?
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

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