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Thread: odd logs for most active senders

  1. #1
    aurfalien is offline Senior Member
    Join Date
    Jan 2009
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    Default odd logs for most active senders

    Hi all,

    Zimbra is setup so that smtp access requires username/pass.

    However in my daily reports (emailed to me), I see that under Most Active Senders are;
    ... on and on with strange users@domains.

    I've even tested my config by a 3rd party relay checker tool which ran 11 tests and said that I didn't allow relaying.

    What's really going on here?

    Thanks in advance.

  2. #2
    uxbod's Avatar
    uxbod is offline Moderator
    Join Date
    Nov 2006
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    Search the forums for backscatter. Sounds like your domains are being spoofed. Welcome to the club

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