I use this header rule for the same thing:
header LOCAL_INVALID_PTR2 Received =~ /from \S+ \(unknown /
score LOCAL_INVALID_PTR2 0.8
describe LOCAL_INVALID_PTR2 Header contains no PTR2
Robert
Peace he would say instead of goodbyepeace my brother.
-Original
Peter Smith wrote:
I'm interested in filtering mail relayed from hosts which have no reverse
dns (PTR) record. A lot of MTAs support rejection of mail from such hosts,
but I feel this will reject too much genuine mail, so I'm looking to
approach the problem via Spam Assassin - perhaps score 1
