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, -- Mun On Fri, May 6, 2011 at 4:13 PM, lists-redhat < replies-lists-b3z1-redhat@xxxxxxxxxxxxxxxxxxxxx> wrote: > check your /etc/sendmail.cf and .mc files. by default the rhel > sendmail is set to only accept localhost mail. a modified > sendmail.cf has to have been put in place to change this, so if this > reverted to the default that would account for what you are seeing. > > > - Richard > > > > ------------ Original Message ------------ > > Date: Friday, May 06, 2011 03:32:16 PM -0700 > > From: Mun <mjelists@xxxxxxxxx> > > To: redhat-list@xxxxxxxxxx > > Subject: Help Needed: My RHEL5 box suddenly stopped accepting > e-mails > > > > Hi, > > > > Particulars: > > Red Hat Enterprise Linux Client release 5.6 (Tikanga) > > > > This last Thu morning (05.05.2011) my RHEL5 suddenly stopped > > accepting e-mails from other than itself. I don't know if the > > following is related, but the following updates were done around > > the time of the problem starting: > > > > ------------------------------ Delimiter BEGIN > > -------------------------------- May 05 08:28:43 Updated: > > xmlsec1-1.2.9-8.1.2.x86_64 > > May 05 08:28:44 Updated: 1:autofs-5.0.1-0.rc2.143.el5_6.2.x86_64 > > May 05 08:28:45 Updated: xmlsec1-1.2.9-8.1.2.i386 > > May 05 08:28:46 Updated: xmlsec1-devel-1.2.9-8.1.2.i386 > > May 05 08:28:46 Updated: xmlsec1-devel-1.2.9-8.1.2.x86_64 > > ------------------------------- Delimiter END > > --------------------------------- > > > > I have since downgraded those packages, but it hasn't helped. My > > IT department has checked various things and they say everything > > looks okay--but there is no explanation for why my system won't > > accept e-mail. > > > > I can watch the network traffic via tcpdump and send myself an > > e-mail from our exchange server and I see my system and the > > exchange server exchanging packets; but my system apparently is > > not accepting the e-mail. And exchange will eventually send a > > "Delivery Delayed" message. > > > > If I can't get this resolved I will be forced to use Outlook :( > > > > Any assistance would be *greatly* appreciated. > > > > Regards, > > > > -- > > Mun > > ------------ End Original Message ------------ > > > -- redhat-list mailing list unsubscribe mailto:redhat-list-request@xxxxxxxxxx?subject=unsubscribe https://www.redhat.com/mailman/listinfo/redhat-list
