From: Jim Turner (jimt@netins.net) Subject: 553 Domain name required Newsgroups: comp.mail.sendmail Date: 1999/12/30 I am in need of some help. This problem has plagued me before and I've never found an answer. It seems to involve MH more than any other mailhandler, but it has happened in pine, elm, etc. I get the above mentioned error (553 Domain name required). Here's the setup. Upgrading from 8.8.8 to 8.9.3. Everything is going swimmingly (testing via telnetting directly to port 25 shows all is well). Sending from mh gives me this: post: problem initializing server; [RPLY] 553 ... Domain name required send: message not delivered to anyone Going to syslog, I grab this output: Dec 30 12:50:20 ins13 sendmail[19032]: MAA19032: ruleset=check_mail, arg1=, relay=localhost [127.0.0.1], reject=553 ... Domain name required Dec 30 12:50:20 ins13 sendmail[19032]: MAA19032: from=, size=0, class=0, pri=0, nrcpts=0, proto=SMTP, relay=localhost [127.0.0.1] Reading through the FAQ, the Features section on sendmail.org, searching this group on deja, and reading the Bat book have all lead to `always_add_domain'. This feature does not work (or I'm misunderstanding it's purpose.). So I add MASQUERADE_AS(domain). No go. Neither does adding MASQUERADE_DOMAIN() with every possible combination of my hostname, including localhost. Just for kicks, I wanted to see how another one of my machines with 8.8.8 handled the null domain. So by telnet, I get : mail from: jimt 250 jimt... Sender ok but syslog shows that this isn't koshir: Dec 30 13:30:36 worf sendmail[23889]: NAA0000023769: to=jimt@netins.net, ctladdr= jimt (41410/15), delay=00:03:22, xdelay=00:00:00, mailer=smtp, relay=netins.net [167.142.225.131], stat=Deferred: Connection refused by netins.net The crazy thing is that all the client mailers on this machine work just fine... I've thought about it, but I can't use `accept_unqualified_senders'. It apparently will solve this problem but leave too much of a relay risk in it's wake. (These machines are very public accessable). I am very very lost at this point. I've backed off the 8.9.3 machines .cf file to a 8.8.8 file and it's happy again. For the life of me, I don't know why. If anyone can offer any assistance, I would be greatly appreciated. ________________ Jim Turner Systems Adminstration netINS, Inc. jimt@netins.net