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Oct 26, 2001, 4:55:42 PM10/26/01

to postfi...@postfix.org

I think I understand these errors in my MAILLOG, but I was wondering how
to avoid them...if I even need to.

Please advise

------------------------------------------------
Oct 26 03:59:49 dch801 postfix/smtpd[21416]: warning: 209.196.28.50:
hostname 50-209.196.28.interliant.com verification failed: Host not found
Oct 26 07:01:23 dch801 postfix/smtpd[24365]: warning: 216.216.220.132:
hostname VISTA1-UBR2-5-hfc-0251-d8d8dc84.rdc1.sdca.coxatwork.com
verification failed: Host not found
Oct 26 08:23:27 dch801 postfix/smtpd[26036]: warning: 38.202.37.197:
hostname minder07.lifeminders.com verification failed: Host not found
Oct 26 11:30:51 dch801 postfix/smtpd[30695]: warning: 216.200.55.4:
hostname 4.betasphere.com verification failed: Host not found
Oct 26 11:59:56 dch801 postfix/smtpd[31460]: warning: 65.207.180.2:
hostname host2.bekaertusa.com verification failed: Host not found
------------------------------------------------------------

--
R. Scott Coats
Manager of Information Technology
Machine & Welding Supply Company

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Oct 26, 2001, 5:00:42 PM10/26/01

to Scott Coats, postfi...@postfix.org

These are warnings, not error messages.

The warnings indicate that people have set up PTR records
(address->name) but no corresponding A records (name->address).

When this happens, Postfix will not use the client hostname for
access control decisions.

This is fixed by kicking the lazy DNS adminstrator in the butt.

Wietse

Scott Coats:

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