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Improving SPAM filtering Questions

Discussion in 'E-mail Discussions' started by Metalmurphy, Sep 15, 2016.

  1. Metalmurphy

    Metalmurphy Member

    Feb 3, 2013
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    Hello everyone,

    I'm not very satisfied with the current level of SPAM filtering in our server using cPanel and SpamAssassin and I'm looking for ways to improve it, however I have some questions on some of the changes I wanted to make, some I'm not even sure if are possible but maybe someone here can land me a hand with these.

    - Custom RBLs
    As of now using custom RBLs means that the email will be rejected at exim, completely ignoring any cPanel filters (like move to a Spam folder) or the SpamAssassin Whitelist. Is there a way to use Custom RBLs in a way that it assigns the message a certain Spam Score but doesn't flatout reject it?

    - Default Global/Mail filters for cPanel accounts
    Is there a way I can configure default Global/Mail account filters so that they are automatically created when a new cPanel account or E-mail account is created? I wanted to have 2 filters always created for any old or new account that would basically delete or move to spam folder any message with the spam score above a certain value.

    - Can I edit values for certain pre-existing rules, for example let's say I want
    RCVD_IN_SORBS_SPAM to receive a 5.0 value instead of 0.5, is it possible?

    Many thanks in advance.
  2. cPanelMichael

    cPanelMichael Forums Analyst
    Staff Member

    Apr 11, 2011
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    There's a post here that explains how to do this:

    New anti-spam DNSBL in the works -- looking for testers

    It's also a useful thread if you are looking for an additional way of blocking SPAM.

    You could implement a custom script that hooks into the email account creation process, but you may find a global system filter rule more effective. It's documented at:

    How to Customize the Exim System Filter File - cPanel Knowledge Base - cPanel Documentation

    Yes, using the method referenced in the post above:

    New anti-spam DNSBL in the works -- looking for testers


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