RE: weird problem deferred...timed out while receiving the initial server greeting)

From: Dan Horne (no email)
Date: Wed Sep 06 2006 - 11:55:50 EDT

  • Next message: Wietse Venema: "Re: why does <#@[]> trigger '501 Bad address syntax'?"

    > Imail is crap. Just look at to see
    > an example of their knowledge.

    As a former Imail user, I have to agree. The Imail community tried
    unsuccessfully to get that option removed for many years. The best they
    did was to get it moved to a manual windows registry hack (described in
    your link) instead of a checkbox in the main GUI labeled "Refuse NULL
    Senders" with no explanation or warning.

    The problem described is most likely an Imail server that is under heavy
    load due to dictionary attacks. The software in versions 8 and under
    didn't have any defense against dictionary attacks (later 8.x versions
    had some registry hacks), and a server could be easily DOS'ed because of
    it. It was because of this problem that I moved to postfix, first as a
    gateway to Imail to mitigate the dictionary attacks, then replacing
    Imail altogether.


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  • Next message: Wietse Venema: "Re: why does <#@[]> trigger '501 Bad address syntax'?"

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