We have this in the dashboard...

If that list could be integrated with smtp blocks and get af defined percentage to block.

Lets say that the domain has a score of 52%.. .I define that the domain is added to smtp blocks IF the score is higher than 50%. Then it will block the domain from exchanging on the server before it hits any filters and thereby saving tons of ressources.

If it passes the smtp blocks then its passed on to the normal filters like Spamfoo, SPF, DKIM, DMARC asf.

Then you will stop the spam sending domains very efficiently over a short period of time.

There will be false positives but a function to whitelist them in Spamfoo so they dont get caught in the SMTP blocks.

Now the offenders will be turned around at the door instead of wandering around in the living until we decide that they should leave because they dont comply with a bunch of different filters.