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Thread: Filter Foreign Language Spam

  1. #1
    X-Dimension is offline Senior Member
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    Default Filter Foreign Language Spam

    90% of our spam mails are in foreign language, so it would be the best way to block foreign language mails for us, because we don't have contacts in other countries. How can i configure Zimbra to filter foreign language spam?

  2. #2
    phoenix is offline Zimbra Consultant & Moderator
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    There is a post in the forum (by me, IIRC) that tells you what you need to do to block foreign spam. Have you also checked this wiki page for some additional tips: Improving Anti-spam system - Zimbra :: Wiki
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  3. #3
    X-Dimension is offline Senior Member
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    OK, thank you.

    I have found the options "ok_languages" and "ok_locales" and i have set them in /opt/zimbra/conf/spamassassin/local.cf.

    Where can i see in Zimbra the mails that was blocked by the spam-filters? Sometimes a mail is blocked that is not spam and i must recover it.

    BTW: What are the differents between the config fles "local.cf" and /opt/zimbra/conf/salocal.cf and salocal.cf.in?

  4. #4
    veronica is offline Outstanding Member
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    > Where can i see in Zimbra the mails that was blocked by the spam-filters? Sometimes a mail is blocked that is not spam and i must recover it.

    If mails are having score above kill percent and are blocked, they cannot be recovered as they must have bounced.

    >BTW: What are the differents between the config fles "local.cf" and /opt/zimbra/conf/salocal.cf and salocal.cf.in?

    Any changes written to salocal.cf.in are rewritten to salocal.cf. So basically you need to edit salocal.cf.in to changes to take effect in salocal.cf

  5. #5
    phoenix is offline Zimbra Consultant & Moderator
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    Any mail that exceeds the Kill percentage is removed from the system (i.e. deleted), it's not a good idea to bounce spam.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  6. #6
    X-Dimension is offline Senior Member
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    These options don't seem to work here. I still get all foreign language spam.

    Here is an example of a spam mail header. Spamassassin gives only a score of 1.007.
    X-Spam-Flag: NO
    X-Spam-Score: 1.007
    X-Spam-Level: *
    X-Spam-Status: No, score=1.007 tagged_above=-10 required=6.6
    tests=[BAYES_50=0.001, HTML_MESSAGE=0.001, RCVD_IN_PBL=0.905,
    RDNS_NONE=0.1] autolearn=no

  7. #7
    phoenix is offline Zimbra Consultant & Moderator
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    Post some details of what changes you've actually made.
    Regards


    Bill


    Acompli: A new adventure for Co-Founder KevinH.

  8. #8
    X-Dimension is offline Senior Member
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    I only add these lines in /opt/zimbra/conf/salocal.cf.in and restarted amavisd
    ok_languages de
    ok_locales de

    score UNWANTED_LANGUAGE_BODY 1.0
    score CHARSET_FARAWAY 1.0
    score CHARSET_FARAWAY_BODY 1.0

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