Am 11.07.2017 um 17:21 schrieb Darren Share:
Hi,
I've posted this as a serverfault [1]question but had no bites so far.
I am receiving about 50 rejected emails per day because there is a typo
in the sending email address and it's hitting
reject_unknown_sender_domain:
Jul 10 12:21:31 serverb3 postfix/smtpd[6647]: NOQUEUE: reject: RCPT from
smtp.correctly-spelt-domain.co.uk[X.X.X.X]: 450 4.1.8
<[email protected]>: Sender address rejected: Domain not
found; from=<[email protected]> to=<[email protected]>
proto=ESMTP helo=<smtp.correctly-spelt-domain.co.uk>
I've added [email protected] OK to /etc/postfix/sender_access,
ran postmap /etc/postfix/sender_access and restarted postfix.
Despite check_sender_access hash:/etc/postfix/sender_access appearing in
my smtpd_recipient_restrictions list before reject_unknown_sender_domain
the emails are still being rejected for that reason. Why is this and how
can I fix it?
Postfix v2.11.3
Output of postconf -n:
smtpd_relay_restrictions = permit_mynetworks reject_unauth_destination
reject_unauth_pipelining reject_invalid_hostname reject_non_fqdn_sender
reject_unknown_sender_domain reject_non_fqdn_recipient
reject_unknown_recipient_domain check_sender_access
hash:/etc/postfix/sender_access reject_rbl_client bl.spamcop.net
reject_rbl_client zen.spamhaus.org reject_rbl_client dul.dnsbl.sorbs.net
permit
You have 'reject_unknown_sender_domain' in 'smtpd_relay_restrictions'
which is evaluated before 'smtpd_recipient_restrictions'. Note that the
reject is delayed until RCPT TO.
http://www.postfix.org/postconf.5.html#smtpd_relay_restrictions
http://www.postfix.org/postconf.5.html#smtpd_delay_reject
--
Alex JOST
