[PLUG] better spam filtering for postfix

Rich Shepard rshepard at appl-ecosys.com
Tue Jun 28 16:05:18 UTC 2022


On Tue, 28 Jun 2022, Cy wrote:

> It's not exactly machine learning, but it does help identify where the
> spam is coming from, and which pure innocent soul you can kick in the
> jubblies for giving your address to spammers.

Using whois for the IP address in the topmost Received from: line identifies
the ISP. It also provides an abuse@ address (most of the time). And the IP
address can be added to a cidr file which is checked in a
'check_client_access cidr file.

Rich



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