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Thread: blocking bcc mails

  1. #1
    fathianf is offline Intermediate Member
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    May 2007
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    Default blocking bcc mails

    I would like to block emails that don't have "To" address and all addresses are in bcc field. please let me know how to do this with zimbra 4.5.7

  2. #2
    mmorse's Avatar
    mmorse is offline Moderator
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    May 2006
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    Both spamassassin rule or postfix header check methods outlined here: Is it possible to give "undisclosed-recipients" a positive spam score?

    (The OP seems to have had trouble getting the header check method to work.)

    (You should seriously consider upgrading to 4.5.11 then 5.0.18)

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