RedHat sendmail issue : stat=Service unavailable

[MikeL_4]

For some reason now, mail being sent to an ID CVGcpu on odccdds01 is being rejected.... while other mail is going through just fine...

I sent a message to myself and received it with no problem:

Sep 4 10:07:42 odccdds01 sendmail[6969]: n84E7gLj006969: from=root, size=68, class=0, nrcpts=1, msgid=<200909041407.n84E7gLj006969@odccdds01.convergys.com>, relay=root@localhost
Sep 4 10:07:42 odccdds01 sendmail[6969]: n84E7gLj006969: to=michael.lense@convergys.com, ctladdr=root (0/0), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30068, relay=cvgmx2.convergys.com. [155.90.248.189], dsn=2.0.0, stat=Sent (Ok: queued as F3CD6A1AA)
Sep 4 10:08:18 odccdds01 sendmail[6974]: n84E8IPl006974: from=root, size=70, class=0, nrcpts=1, msgid=<200909041408.n84E8IPl006974@odccdds01.convergys.com>, relay=root@localhost

But a message to CVGcpu@perf.dcd.convergys.com I receive messages in maillog that Service Unavalable.... stat=Service unavailable

Sep 4 10:08:18 odccdds01 sendmail[6974]: n84E8IPl006974: to=CVGcpu@perf.dcd.convergys.com, ctladdr=root (0/0), delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30070, relay=cvgmx2.convergys.com. [155.90.248.189], dsn=5.7.1, stat=Service unavailable
Sep 4 10:08:18 odccdds01 sendmail[6974]: n84E8IPl006974: n84E8IPm006974: DSN: Service unavailable
Sep 4 10:08:18 odccdds01 sendmail[6974]: n84E8IPm006974: to=root, delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=31094, relay=cvgmx2.convergys.com. [155.90.248.189], dsn=5.7.1, stat=Service unavailable
Sep 4 10:08:18 odccdds01 sendmail[6974]: n84E8IPm006974: n84E8IPn006974: return to sender: Service unavailable
Sep 4 10:08:19 odccdds01 sendmail[6974]: n84E8IPn006974: to=postmaster, delay=00:00:01, xdelay=00:00:00, mailer=relay, pri=32118, relay=cvgmx2.convergys.com. [155.90.248.189], dsn=5.7.1, stat=Service unavailable
Sep 4 10:08:19 odccdds01 sendmail[6974]: n84E8IPm006974: Losing ./qfn84E8IPm006974: savemail panic
Sep 4 10:08:19 odccdds01 sendmail[6974]: n84E8IPm006974: SYSERR(root): savemail: cannot save rejected email anywhere

I am running Red Hat 5.3 and sendmail-8.13.8-2.el5 on this server and over two dozen others... all except this server can send mail to this CVGcpu ID without any problem... It's only this one server, and it was working until about a week ago when it stopped...

No changes have been done on the server...

Any ideas would be appreciated..

[John Donovan]

Did the owner of the mail relay server, cvgmx2.convergys.com, drop odccdds01 from the "authorized relay list"?

The other problem, "savemail: cannot save rejected email anywhere" indicates a problem with disk space or permissions. Compare this server with one or more of the working servers.

Is /var full?

/var/spool/mail ##Should be 775
/var/spool/mail/root ##should be 600 owned by root:root; all others should be 660 owned by :mail
/var/tmp/dead.letter ##if exist, should be 666
$HOME/dead.letter ##should be owned by the 660

Hope this helps...
--donovan

[MikeL_4]

I wouldn't suspect the mail server: cvgmx2.convergys.com, as other mail is going out from my server to this same mail server without any problem, it just seems like it picking on this one mail address..

I've verified all the permissions and ownership and all are correct.. and /var is under / and there is plenty of room in it...