I have published SPF records for my domain. I have also started checking
SPF records, with my MTA (Postfix).
So far, this has worked nicely.
However, I'm seriously considering scrapping it. This is because my
system forwards mail for some clients, which means I need to impliment
SRS. Unfortunately, there appear to be no patches to Postfix that
impliment it (please correct me if I'm wrong). Asking about this on the
Postfix mailing list is no good, as Wietse has made the topic of SPF/SRS
forbidden, and said that anyone bringing it up would be unsubscribed.
I asked about this on the SRS-DISCUSS list, but have not received any
suggestions on what to do, so am posting here, in hopes that someone
knows of patches that will do what I need.
TIA,
-ste