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  1. #1
    Newbie
    Join Date
    Nov 2016
    Posts
    11

    Default spam filtering from internal port

    Hi,

    Can someone explain how Untangle handles spam filtering on port 25 vs port 587?

    I have clients on the outside connecting to my mail server on my LAN, with UT in bridge mode between my router and LAN.
    I'm seeing mail quarantined with a from: address of my clients, going to outside contacts of theirs. I'm seeing the client successfully connecting to the mail server, dropping off mail, and then seeing it on a quarantine list for the intended recipient outside our network.

    I'm thinking this has to be related to port 25 vs 587 traffic. It is just a guess, though.

    Thanks!

    --Ben

  2. #2
    Untangler jcoffin's Avatar
    Join Date
    Aug 2008
    Location
    Sunnyvale, CA
    Posts
    5,825

    Default

    Spam filtering is only on port 25. If you have "Scan outbound (WAN) SMTP" enabled, then recipients will receive quarantine messages.
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