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Thread: Outgoing (Ham-)Mail recognized as SPAM?

  1. #1
    Join Date
    May 2008
    Rep Power

    Default Outgoing (Ham-)Mail recognized as SPAM?


    we are currently testing Zimbra Network Edition 5 in a multi-server environment (2x mta, store, ldap, proxy).

    We just found out, that outgoing Mails do also go through the spam-filter. And apperently, all our outgoing mail gets tagged as SPAM by our OWN spam-filter.

    We have tested internal mail (zimbra -> zimbra), external (zimbra -> other mailserver) sending via webinterface and mail-client.

    It mostly results in a X-Spam-Status like this one:

    X-Spam-Status: Yes, score=5.065 tagged_above=-10 required=5
    tests=[AWL=-0.317, BAYES_99=3.5, RCVD_IN_PBL=0.905,

    Thats quite weird in my opinion. Whats the problem here? I've even tested it with different domains, assuming there maybe some dns misconfiguration - same result.

    We setup MTA normally and installed SPF on both mta and did some training via the UI. Besides no config changes...

    First of all, why does spamassassin also filter outgoing mails (which got delivered by an authenticated user)?

    Second, why does spamassassin tag my normal, daily, non-suspicious mail with BAYES_99, which IMHO is only based on textual recognition?

    Best regards,

  2. #2
    Join Date
    May 2006
    New York, NY
    Rep Power


    Has there been no resolution to this ticket?

    This is effecting our remote users as well, if they are on a Public Dynamic IP RBL it can cause their outbound (or internal to internal!) emails to hit off multiple RBL's and be tagged as spam.

    I have seen "workarounds" for this, such as having a whitelisted sender policy, but this does not seem to be the correct way to fix this issue, and opens other attack vectors with spoofed senders.

    Imo authenticated users should be ignored by DSPAM/Amavis


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