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Thread: unknown addresses in my zimbra log

  1. #1
    Join Date
    Jan 2012
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    Default unknown addresses in my zimbra log

    I see strange things in my zimbra log file.

    NOQUEUE: reject: RCPT from unknown[]: 550 5.1.1 <*some unknown address@*our domain*>: Recipient address rejected: *our domain*; from=<> to=<*some unknown address@*our domain*> proto=ESMTP helo=<>

    There are unknown addresses who trying to send emails to unknown users in my domain.. And that happens every SECOND....

    Also suddenly a user in my domain received 912 undelivered emails in her inbox.. All messages she didn't sent... So we changed the password, but after a week, it happens again and again and again..

    Is there a bug in my mailserver? What can I do

  2. #2
    phoenix is offline Zimbra Consultant & Moderator
    Join Date
    Sep 2005
    Vannes, France
    Rep Power


    Quote Originally Posted by Sam159 View Post
    Is there a bug in my mailserver?
    No there isn't, it's a fact of life called spam.

    Quote Originally Posted by Sam159 View Post
    What can I do
    Look through some of the techniques in the forums, wiki and the internet for "NDR spam" and what you can do to reduce it.


    Acompli: A new adventure for Co-Founder KevinH.

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