Well, I thought everything was working, but sendmail won't receive mail. 1) Doing a status on sendmail says its running 2) dig says that named is running on that server and returns all proper looking info. 3) I had saved the WORKING access, local-host-names and virtusertable files before replacing the bad hard drive and had copied them back into /etc/mail and done a make, so I assume they're good 4) I just restarted the mail server, which logged the following: Sep 3 19:03:39 boron sendmail[2674]: alias database /etc/aliases rebuilt by root Sep 3 19:03:39 boron sendmail[2674]: /etc/aliases: 40 aliases, longest 10 bytes, 395 bytes total Sep 3 19:03:40 boron sendmail[2687]: starting daemon (8.11.6): SMTP+queueing@01:00:00 The test mailing has the following entries in the SENDING sendmail log, and NO entries in the receiving sendmail log or firewall log: Sep 3 17:12:40 bach sendmail[11154]: g83LCec11154: from=<dick@goodman1.net>, size=385, class=0, nrc pts=1, msgid=<4.2.0.58.20020903171330.00a3f418@pop.goodman1.net>, proto=ESMTP, daemon=MTA, relay=hos t3.goodman1.net [192.168.1.3] Sep 3 17:12:41 bach sendmail[11156]: g83LCec11154: to=<r.goodman@11harvard.com>, ctladdr=<dick@good man1.net> (503/503), delay=00:00:01, xdelay=00:00:01, mailer=esmtp, pri=30385, relay=11harvard.com. [66.92.78.250], dsn=4.0.0, stat=Deferred: Connection refused by 11harvard.com. and the following on a retry Sep 3 18:23:52 bach sendmail[11217]: g83LCec11154: to=<r.goodman@11harvard.com>, ctladdr=<dick@good man1.net> (503/503), delay=01:11:12, xdelay=00:00:00, mailer=esmtp, pri=210385, relay=11harvard.com. [66.92.78.250], dsn=4.0.0, stat=Deferred: Connection refused by 11harvard.com. I have three similar servers (the other two still RH7.0) and I have never touched the sendmail config - only the access, local-host-names and virtusertable files on any of them. Has something changed between the versions of sendmail on RH7.0 and RH7.3 or have I missed something. The lack of any message on the receiving server puzzles me. Or has something changed in named relating to mail? Dick