This would be a test similar to SPAMDOMAINS but instead would be SPAMREVDNS.
Instead of seeing if the domain matches the REVDNS, it would check if the
REVDNS matches the domain.

It would work like this:

.aol.com        @aol.com

If the REVDNS ended with .aol.com but the from address did not end in
@aol.com, it would fail.

This would also help ISPs, where the user may have a REVDNS ending in
ispdomain.com but the ISP allows e-mail to be sent from @otherdomain.com
where you would then have a line like so:

.ispdomain.com  @otherdomain.com

The test would also be configured to match any line, not all lines.

.ispdomain.com  @otherdomain1.com
.ispdomain.com  @otherdomain2.com
.ispdomain.com  @otherdomain3.com
.ispdomain.com  @otherdomain4.com

So if a message had a REVDNS of .ispdomain.com and had a from address ending
in any of the listed domains it would pass. If a REVDNS was listed, but did
not match any domain listed, it would fail.

John Tolmachoff
Engineer/Consultant/Owner
eServices For You



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