Customized spam score for RBL listed senders

Revision as of 05:20, 28 July 2020 by Rnoti (talk | contribs) (Created page with "=Customized spam score for RBL listed Senders= <hr> {{KB|{{ZC}}|{{ZCS 8.8}}|{{ZCS 9.0}}|}} {{WIP}} ====Requirement==== Add positive/negative spam score to the email if...")

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Customized spam score for RBL listed Senders


   KB 24126        Last updated on 2020-07-28  




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Requirement

Add positive/negative spam score to the email if senders IP listed in the RBL's.

Description

RBL's will work at the MTA (postfix) level, so if sender IP is listed in the RBL then the email is rejected by MTA (where RBL's enabled) without any notification. To allow email without compromising security check, disable RBL check at MTA level and enable at Amavis level (Spam assassin).

Steps to follow
Step-1
  • Remove required RBL's at MTA level if enabled.
Note: If RBL's not enabled at MTA level then this step can be skipped.
  • Global level configuration.
    zmprov mcf -zimbraMtaRestriction "reject_rbl_client <RBL Address>"
i.e.:
zmprov mcf -zimbraMtaRestriction "reject_rbl_client xbl.spamhaus.org"
  • Server level configuration
    zmprov ms `zmhostname` -zimbraMtaRestriction "reject_rbl_client <RBL Address>"


Step 2
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Submitted by: Author name
Verified Against: ZCS 8.8 Date Created: 2020-04-13
Article ID: https://wiki.zimbra.com/index.php?title=Customized_spam_score_for_RBL_listed_senders Date Modified: 2020-07-28



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