anyone ? howto for implementing SPF into postfix

[rbtux]

@nachtarbeit:

if you don't wan't to enable/disable spf checking for specific domains then this shouldn't care ispcp.

how to implement spf depends on your mail setup:
Exemples -> direct within postfix with a policy-server
with maia mailguard
with spammassassin-plugin...

you see there are a lot possibilites to do spf checking (if its suggestive -> that's an other question)