How to enable SpamAssassin spam check for forwarded emails on Windows

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    Miomir Besarabic

    If we use "Server-wide mode" what happen with identified Spam? Only marked and forwarded to customers inbox or moved to Quarantine? If moved to Quarantine to which one?

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    Daria Gavrilova

    Hello @Miomir Besarabic,

    Thank you for your question.
    If Switch on server-wide SpamAssassin spam filtering option is enabled, then all messages, which were identified as Spam, will be automatically moved to the Spam folder.
    Please note, that at the server level, you cannot set the server-wide spam filter to automatically delete spam: you can do it only on a per-mailbox basis.

    More information on this matter you may also find here: SpamAssassin Spam Filter

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    Miomir Besarabic

    Hi,

    Thank for your answer. I read already all Plesk docs about Spam Filter. My problem is that we have a lot of customers with mail forwarding on the servers and even with only Server-wide mode filtering of forwarded emails is not performed. A lot of Spam is forwarded what is big problem for us.

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    Alisa Kasyanova

    @Miomir Besarabic
    There is a possibility that SpamAssasin has low sensitivity, so it does not recognize spam properly. Try to decrease the Spam filter sensitivity in Tools & Settings > Spam Filter.
    Check the following article as well: https://support.plesk.com/hc/en-us/articles/115003117405-How-to-train-SpamAssassin-

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    Miomir Besarabic

    @Alisa Kasyanova

    SpamAssasin hasn't low sensitivity. It is set to 4. And I cannot train Spam because this users have ONLY forwarding without mailbox. The possibility to train Spam globaly is missing in Plesk. Or am I wrong?

    As I see Spam train is only possible on per user mailbox. If user haven't mailbox, Spam isn't trained. If I do manually I need to bayes files to ANY mailbox one by one  what is stupid and even then if no mailbox no place for bayes files.

    Why cannot such user without mailbox use global bayes files anywhere?

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    Alisa Kasyanova

    @Miomir Besarabic

    It is possible to train SpamAssassin globally using these instructions: https://cwiki.apache.org/confluence/display/SPAMASSASSIN/SiteWideBayesSetup

    Anyway, I recommend submitting a request to our support to check whether the SpamAssassin and mail configuration is fine: https://support.plesk.com/hc/en-us/articles/213608509-How-to-submit-a-request-to-Plesk-support-

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    ©lemens ⛷️ 🇪🇺 ☮️ (Edited )

    A very unsatisfying, inacceptable situation, counting in we write 2019 now, and this is software we pay for!

    Filtering MUST ALWAYS happen before redirect. Just that simple.

    So please hurry up and do your homework!


    [BTW: i am pretty sure, this problem also concerns Plesk for Linux!]

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    Ivan Postnikov

    Hello @©lemens ⛷️ 🇪🇺 ☮️,

    Thank you for the feedback.in order to improve the behavior of filtering, I've created the corresponding feature suggestion:

    https://plesk.uservoice.com/forums/184549-feature-suggestions/suggestions/38209024-spamassassin-check-should-always-happen-before-red

    Feel free to comment it.

    I've also reviewed the support requests about such behavior, the issue is Windows-specific.

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    Miomir Besarabic (Edited )

    @Ivan Postnikov

    Not only for Windows but for Linux too. We have huge problems with forwarded mails without any Spam-Filter check which allow a lot of Spam to be forwarded.

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    Miomir Besarabic (Edited )

    @Ivan Postnikov

    The best solution was Spamassassin pre-queue filtering, which cover everything and allow to reject Spam or unwanted mails. Pre-queue filtering is simple to implement with Postfix and header_checks (on Linux). I did on our test server with just few changes in 2 files.

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    Ivan Postnikov

    @Miomir Besarabic

    Thank you for the additional information, which may be useful for other Pleskians and thank you for voting for the feature suggestion.

     

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