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(Fwd) How does postfix resolve domain names?
From: Eugene Geldenhuys (eugeneg
tfx.com.au)
Date: Wed Nov 01 2006 - 21:49:41 CST
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Hi
I am new to the list and have tried to find the answer to my question
in the archives and
elsewhere on the web.
I am interested in the mechanism postfix uses to resolve names, the
reason I ask is because
after implementing
smtpd_client_restrictions = reject_unknown_client
in main.cf, I am seeing messages like this in the log:
scylla postfix/smtpd[11408]: NOQUEUE: reject: RCPT from
unknown[203.161.126.147]: 450
Client host rejected: cannot find your hostname, [203.161.126.147];
from=<someonesomewhere> to=<someonemydomain> proto=ESMTP
helo=<tara2.wa.amnet.net.au>
I left the hostname and address intact, if you resolve the address,
you get:
Non-authoritative answer:
147.126.161.203.in-addr.arpa name = tara2.wa.amnet.net.au.
which exactly matches the hostname.
I am a bit puzzled, please assist.
Best Regards
Eugene Geldenhuys
MCNE ECNE MCSE MCP
TFX SOLUTIONS -
PROFESSIONAL NETWORK DESIGN ,IMPLEMENTATION AND SUPPORT
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