Author: Chris Edwards Date: To: Exim User's Mailing List Subject: Re: [Exim] Final Peer Review Sought: "Spam Filtering for MXs" HOWTO
Hi,
In the section on sender callouts (2.3.2.4. Sender Callout Verification)
it might be worth adding a comment that this is considered a dubious
practice by many, as it annoys innocent mail servers - guilty of nothing
other than having their domain forged.
Hence there are a growing number of sites which will blacklist systems
blindly attempting this sort of callout. Please think carefully before
recommending this.
--
Chris Edwards, Glasgow University Computing Service
