Which Postfix restriction generates: "Helo command rejected: Domain not found"?
>From the log on albatross.python.org:
Aug 21 15:07:07 albatross postfix/smtpd[15378]: NOQUEUE: reject_warning: RCPT
from qmta09.emeryville.ca.mail.comcast.net[76.96.30.96]: 554 5.0.0
<QMTA09.emeryville.ca.mail.comcast.net>: Helo command rejected: Domain
not found; from=<rickbk...@comcast.net> to=<python-l...@python.org> proto=ESMTP
helo=<QMTA09.emeryville.ca.mail.comcast.net>
Aug 21 15:19:42 albatross postfix/smtpd[11319]: NOQUEUE: reject_warning: RCPT
from cat.lrt.ru[91.192.244.67]: 554 5.0.0 <cat.lrt.ru>: Helo command rejected:
Domain not found;
from=<project2...@project2010.co.za> to=<mailman-us...@python.org>
proto=ESMTP helo=<cat.lrt.ru>
The only warn_if_reject in main.cf are:
# fgrep warn_if main.cf
warn_if_reject check_helo_ns_access
cidr:/etc/postfix/nsbl.cidr.msg.outboundindex,
warn_if_reject check_helo_ns_access
cdb:/etc/postfix/nsbl.hosts.msg.outboundindex
warn_if_reject check_sender_ns_access
cidr:/etc/postfix/nsbl.cidr.msg.outboundindex,
warn_if_reject check_sender_ns_access
cdb:/etc/postfix/nsbl.hosts.msg.outboundindex,
# fgrep -i domain /etc/postfix/nsbl.cidr.msg.outboundindex
/etc/postfix/nsbl.hosts.msg.outboundindex
(no match, just to prove there's no LHS of "Domain not found"
But according to
# host QMTA09.emeryville.ca.mail.comcast.net
QMTA09.emeryville.ca.mail.comcast.net has address 76.96.30.96
# host cat.lrt.ru
cat.lrt.ru has address 91.192.244.67
the hostnames even resolve.
But:
a) Why would check_helo_ns_access result in a "Helo command rejected: Domain
not found"
error?
I usually use reject_unknown_helo_hostname for that, but:
# postconf |grep unknown_helo_hostname
unknown_helo_hostname_tempfail_action = $reject_tempfail_action
b) for a domain that does exist (ok, admittedly, NOW, it could have
been differently 8 days ago)
--
Ralf Hildebrandt
Geschäftsbereich IT | Abteilung Netzwerk
Charité - Universitätsmedizin Berlin
Campus Benjamin Franklin
Hindenburgdamm 30 | D-12203 Berlin
Tel. +49 30 450 570 155 | Fax: +49 30 450 570 962
ralf.hildebra...@charite.de | http://www.charite.de
