Merry Christmas All!
I am wondering why I have two different errors for same reason?
: NOQUEUE: reject: RCPT from unknown[41.203.141.1]: 450 4.7.1 Client host
rejected: cannot find your hostname,
: NOQUEUE: reject: RCPT from unknown[115.153.142.125]: 550 5.7.1 Client
host rejected: cannot find your hostname
I would prefer all of these 5xx
But there appears to be two different checks here reporting the same reason.
It obviously either hostname in connect, from or helo, if so can postfix be
made to report the right message?
In this case eliminate the from, the hostname in the helo exists for the
5XX but fails on the 4xx
Does postfix just assume since it gets NXDOMAIN on both connect and helo it
must be an error?
Does postfix only get to the helo NXDOMAIN failure and act upon that alone
before connect, which seems to me to be what happens.
Either way is there a option to force 5xx on unknown
I have always run these options -
unknown_client_reject_code = 550
unknown_address_reject_code = 550
unknown_hostname_reject_code = 550
unverified_sender_reject_code = 550
unknown_local_recipient_reject_code = 550
the relevant smtpd_recipient_restrictions options I using for this are
reject_unknown_sender_domain
reject_unknown_recipient_domain
....
reject_unknown_client_hostname
reject_unknown_helo_hostname
reject_invalid_helo_hostname
reject_non_fqdn_helo_hostname
reject_non_fqdn_sender
reject_non_fqdn_recipient
reject_unlisted_recipient
reject_unlisted_sender
...
Thanks sand Happy Holidays
