Hi All!
On one of the servers I manage I have
smtpd_client_restrictions =
permit_mynetworks
permit_sasl_authenticated
reject_unknown_client
permit
Obviously this rejects any requests where the DNS (forward or reverse)
fails.
I am under increasing pressure to change this apparently because other
email admins
have their mail servers misconfigured resulting in "lost" emails. I
believe this is
in violation of RFC 5321 but correct me if I am wrong.
Should I cave in and change or should I insist on this? What do you do
with your servers?
Thank you
Andreas