Hi Richard, On Sat, May 7, 2011 at 3:38 AM, lists-redhat < replies-lists-b3z1-redhat@xxxxxxxxxxxxxxxxxxxxx> wrote: > in your .cf, what do you have as an active (not commented out) > option the under: > > # SMTP daemon options > > tag? > > is it: > > O DaemonPortOptions=Port=smtp,Addr=127.0.0.1, Name=MTA > > or something more along the lines of one of the following: > > O DaemonPortOptions=Name=IPv4, Family=inet > > O DaemonPortOptions=Name=MTA > I have the choice immediately above in my sendmail.cf: DaemonPortOptions=Name=MTA > > The first, with the 127.0.0.1, is the default for RHEL and will only > accept localhost mail. The other two are forms will allow it to > accept mail from off localhost. > > If that looks ok, try telnetting to port 25 on this machine from > off-host - e.g., from the exchange server. Do you get a "connection > refused" response or a "hang". If "connection refused", then it's > most likely the sendmail daemon doing the blocking. If you get a > "hang", then it's likely a firewall of some nature, e.g., iptables. > I get "connection lost" or "Connection timed out"; depending on the computer I use to run telnet. The "connection lost" is what my Windows XP box returned; and the "Connection timed out" is what another Linux box returned. > Have you looked at your machine's logs (maillog, messages, secure > being the most obvious) they may give some hints. > Yes. I have looked at those, as has the company's IT dept. But there were no messages that would help with this issue. > > Have you restarted sendmail? > Yes. I've also rebooted a coupled of times; nothing seems to help. It's just so weird that with no obvious changes made (except for the updates applied and then downgraded that I mentioned in my initial message) that my box would just all of the sudden stop accepting email. Thanks very much for the reply. I greatly appreciate the ideas. Regards, -- Mun > > - Richard > > > > ------------ Original Message ------------ > > Date: Friday, May 06, 2011 04:48:34 PM -0700 > > From: Mun.Johl@xxxxxxxxxx > > Subject: RE: Help Needed: My RHEL5 box suddenly stopped accepting > e-mails > > > > Hi Richard, > > > > Thanks for your reply. > > > > I had saved off /etc/mail when we first got email working properly > > on my system (a couple of years ago) and I compared the current > > sendmail.cf to the "known good" copy. The only difference I see > > is that IT has uncommented the following line: > > > > O Timeout.ident=0 > > > > With respect to sendmail.mc, the version currently used by the > > system had the following lines commented out: > > > > MASQUERADE_AS(`mydomain.com')dnl > > FEATURE(masquerade_envelope)dnl > > MASQUERADE_DOMAIN(localhost)dnl > > MASQUERADE_DOMAIN(localhost.localdomain)dnl > > > > I'm not too experienced with sendmail, but it doesn't appear to me > > as if the changes above would result in the problem I am having; > > does it? > > > > Regards, > > ------------ End Original Message ------------ > > > -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
