SUMMARY: Sendmail Problems...

Andre M. Coleman ()
Tue, 20 Jan 1998 12:12:55 -0700

ORIGINAL POST:

======================================================================
Greetings Sun Managers,

I have recently upgraded my Sparc 2 server from Solaris 2.4
to Solaris 2.5.1 (with all the recommended patches).
Everything appears to be working correctly with the exception
of the outgoing mail services. Anytime a user sends mail
to the outside world, it is bounced back w/ a message
regarding the host not being found:

----- The following addresses had delivery problems -----
<nature@logannature.org> (unrecoverable error)

----- Transcript of session follows -----
550 <nature@logannature.org>... Host unknown (Name server:
logannature.org: host not found)

Running sendmail from the command line results in:

ROOT> /usr/lib/sendmail -qv
<nature@logannature.org>... Host unknown (Name server: logannature.org:
host not found)
ROOT>

I am imagining that I do not have something set up correctly in
the sendmail.cf file, however, I cannot figure what.

Any help on this matter would be greatly appreciated.

I will summarize.

Andre Coleman (acoleman@geograph.com)
GEO/Graphics, Inc.
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My thanks and gratitude to the following people:

Shriman Gurung <SG@datcon.co.uk>
David Wolfskill <david@xtend.net>
Marcos Assis Silva <assis@uel.br>
Jim Harmon <jharmon@telecnnct.com>
Karl E. Vogel <vogelke@c17mis.region2.wpafb.af.mil>
Alessandro Forghieri <alf@orion.it>
Bismark Espinoza <bismark@alta.Jpl.Nasa.Gov>
Joseph S D Yao <jsdy@gwyn.tux.org>

This actually turned out to be a simple fix:

For one reason or another, my /etc/nsswitch.conf file was missing
the 'dns' entry for hosts, and therefore was not able to do any
DNS lookups.

Andre Coleman (acoleman@geograph.com)
GEO/Graphics, Inc.