I have a weird issue where a sender with a valid reverse DNS entry is
getting rejected.
main.cf:
===
smtpd_delay_reject = yes
smtpd_client_restrictions =
...
reject_unknown_reverse_client_hostname
Oct 4 19:04:21 postfix/smtpd[231]: connect from unknown[64.68.XXX.XXX]
Oct 4 19:04:21 postfix/smtpd[231]: NOQUEUE: reject: RCPT from
unknown[64.68.XXX.XXX]: 450 4.7.1 Client host rejected: cannot find your
reverse hostname, [64.68.XXX.XXX]; from=<[EMAIL PROTECTED]> to=<[EMAIL PROTECTED]>
proto=ESMTP helo=<Y.COM>
Oct 4 19:04:21 smtp2-1 postfix/smtpd[231]: disconnect from
unknown[64.68.XXX.XXX]
# host 64.68.XXX.XXX
XXX.XXX.68.64.in-addr.arpa domain name pointer
BRYANLEX_lan_64.68.XXX.XXX.Z.TLD
I've verified reverse DNS at www.dnswatch.info as well as all
nameservers configured on the postfix system.
The only possibility I see are the underscores. Other than that, the
mail should have been let through.
- Darek
