One way, albiet expensive on CPU util is reject_unverified_sender.
Sends probes to determine if address is valid before accepting
delivery. Very effective but if a very busy system you will want to
limit it's use. Also exceptions will need to be made for noreply type
senders, otherwise many password reset schemes and other auto
generated emails will get denied.
Sent from my iPhone
On Sep 12, 2009, at 12:48 PM, Damian Myerscough <damian.myersco...@gmail.com
> wrote:
Hello,
I had a question regarding forged mail. I wanted to know if it was
possible for Postfix for
postfix to check the integrity of incoming emails?
What I mean by this is, if a malicious attacker send an email from
dam...@hotmail.com is
there anyway to check that the email came from hotmail.com via a DNS
lookup?
--
Regards,
Damian Myerscough
