Heiko Wundram:
> Hey!
>
> I'm currently working up a patch for Postfix which implements support
> for libsrs2 functionality in the Postfix core.
Instead of tearing up Postfix, consider implementing sender and
recipient address manipulations with a Milter plugin. This would
do all the work at the time the message is stored into the mail
queue.
Thus, you'd always verify+unobfuscate local envelope recipients,
and you'd always sign+obfuscate local envelope senders, for some
suitable definition of "local".
Support for sender replacement (SMFIR_CHGFROM) is available with
Postfix 2.5 and later; recipient manipulation has been available
since Postfix 2.3.
Wietse