Configure Spamhaus DBL and ZRD

Community Support Mail
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Your guidance was of paramount help. Thank you again!! I tracked the issue down and here is my resolution…

Looking at the headers of the email message that should have been blocked based on zrd-dqs-ehlo I noticed those two lines that were messing with the spam score by adding a -5 to the total score:

 -2.0 RCVD_IN_VALIDITY_SAFE  RBL: Sender in Validity Safe - Contact
                             [email protected]
 [Excessive Number of Queries | <https://knowledge.validity.com/hc/en-us/articles/20961730681243>]
 -3.0 RCVD_IN_VALIDITY_CERTIFIED RBL: Sender in Validity Certification -
                             Contact [email protected]
 [Excessive Number of Queries | <https://knowledge.validity.com/hc/en-us/articles/20961730681243>]

I am not interested in Validity’s RBL so I decided to disable these checks by following the instructions here.

Copying below for reference:

  1. Create the file custom.cf by running touch /etc/mail/spamassassin/custom.cf (or open it if it exists)
  2. Add the following content to the new file:
dns_query_restriction deny sa-trusted.bondedsender.org
dns_query_restriction deny sa-accredit.habeas.com
dns_query_restriction deny bl.score.senderscore.com
  1. Check for any errors with spamassassin --lint and restart service with systemctl restart spamd

After solving my issue, I started searching for “is validity’s RBL of any use?” and guess what I found?

By the way, a lot of people on the internet seem to suggest to disable checks to Validity RBL :slight_smile:

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