On man 20 dec 2010 05:31:40 CET,  wrote

Gentlemen, I wish there was a
whitelist_from *...@facebookmail.com
rule that would use the Return-Path field,

$ egrep '^(From|Return-Path):' a b
a:Return-Path: <notification+zj4oo-6-6...@facebookmail.com>
a:From: Facebook <notification+zj4ooo699...@facebookmail.com>
b:Return-Path: <chanetho...@hotmail.com>
b:From: Facebook <update+3ttttttxy...@facebookmail.com>

as that is much more reliable.

I see there are other whitelist_ rules, but none that can use what is
already staring one in the face in the headers, and does not need to go
on the network to work.


whitelist_from_dkim *...@facebookmail.com

only spf need return-path if using postfix as mta


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