I think the oft repeated "SPF-breaks-forwarding" and
"Use-SRS-when-frowarding" is the still top problems for SPF acceptance.
The next big hurdle is when ISP's block smtp access to corporate
mailservers and force the corporates to include a plethora of IP into
their SPF
Regarding the first problem
I am using Postfix and cyrus on my mailserver and use sieve rules for
forwarding. Frustratingly even though SRS has been around for ages now
there is not a single implementation of SRS for my setup. I remember
trying some smtp milter but that never worked
When I tell customers to use SPF to prevent forged spams from their
ids , they simply give the forwarding excuse not to use SPF
How do you guys handle the situation
Thanks
Ram
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