I have an hp e3000 in Melbourne Australia.  This system has sendmail
installed and we use this for sending internal mail with no problem.  We are
now trying to send some e-mail externally.  Then only corporation external
relay is in Dallas, TX. So I changed the DS configuration line in the
/etc/sendmail.cf file to be
# "Smart" relay host (may be null)
DSdalex1.flowserve.com

Stopped both the syslog daemon and the sendmail daemon and started them
back.
Yet when the e-mail is send via a job the resulting /tmp/syslog.log record
entries indicate the there was a problem.

The syslog entries are
Apr  1 09:39:24 localhost sendmail[24117319]: IAA29950056:
[log in to unmask], delay=4+00:13:45, xdelay=00:00:04,
mailer=esmtp, relay=mx2.clear.net.nz. [203.97.37.11], stat=Deferred: 451
<[log in to unmask]>... Sender domain (melap1.flowserve.com)
not found in DNS, or not compliant with section 6 of RFC822
Apr  1 09:39:26 localhost sendmail[24117319]: IAA27918455:
[log in to unmask], delay=4+00:19:16, xdelay=00:00:02,
mailer=esmtp, relay=mx2.clear.net.nz., stat=Deferred: 451
<[log in to unmask]>... Sender domain (melap1.flowserve.com)
not found in DNS, or not compliant with section 6 of RFC822

This seems to indicate that the system is trying a different relay and that
the other replay can not see the server since it is behind a firewall.

Can anyone suggest a change in configuration for this case?

-------------------------------------------------
Larry Simonsen                Phone: 801-489-2450
Flowserve Corporation     Fax: 801-491-1750
PO Box 2200                    http://www.Flowserve.com
Springville, UT 84663      e-mail: [log in to unmask]
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All opinions expressed herein are my own and reflect, in no way, those of my
employer.