On 2013-12-05 7:50 AM, Andreas Kasenides <[email protected]> wrote:
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.
Do not use reject_unknown_client_hostname (I presume this is what you
meant)...
It is well known to block legitimate mail.
Use reject_unknown_reverse_client_hostname instead, it is safe to use.
Also, postconf -n output is preferred to copy/pastes or manually typing
contents of $random_config_file...
--
Best regards,
*/Charles/*
