Some of the mails for a particular domain are not getting delivered from our mail server. We are using sendmail for mail server.
Fallowing can be seen in log
Oct 21 13:24:59 mailser sendmail: r9L7st1a005405: to=<email@example.com>, delay=00:00:03, xdelay=00:00:03, mailer=esmtp, pri=120539, relay=mailgw.test.in. [164.X.X.19], dsn=2.0.0, stat=Sent (ok: Message 289953693 accepted)
FOr other domains like yahoo , gmail etc it is working fine .
But if I send the mail through commandline using mailx command from the same server , the message is going through...
Oct 21 13:30:37 ssdgweb sendmail: r9L80RFI005440: to=<firstname.lastname@example.org>, ctladdr=<email@example.com> (502/502), delay=00:00:10, xdelay=00:00:10, mailer=esmtp, pri=120329, relay=mailgw.test.in. [164.X.X.19], dsn=2.0.0, stat=Sent (ok: Message 289955601 accepted)
Please let us know what is the issue and how it can be resolved .