W dniu 2009-04-14 23:47, mouss pisze:
Paweł Leśniak a écrit :
W dniu 2009-04-14 23:00, mouss pisze:
[snip]
and spammers seem to forge valid addresses, so the check looks useless
to me.
How do they forge a client DNS A records consistent with PTR records?
I meant they use forged sender addresses where the domain is valid. for
example, you may get spam with the sender set to<mo...@netoyen.net>.
Sure. If this will be sent from host without correct DNS entries it
could be blocked with reject_unknown_*.
Anyways - question was about sender with *invalid* domain.
Pawel Lesniak
