Code:
May 16 17:09:40 host01f sendmail[28782]: [ID 801593 mail.info] u4GM9e3L028782: from=<user1@host01f.nam.int.local>, size=374, class=0, nrcpts=1,
msgid=<201605162209.u4GM9ewi028781@host01f.nam.int.local>, proto=ESMTP, daemon=MTA, relay=localhost [127.0.0.1]
May 16 17:09:41 host01f sendmail[28782]: [ID 801593 mail.info] u4GM9e3L028782: to=<User_One@ABC.com>, ctladdr=<user1@host01f.nam.int.local> (63184/426),
delay=00:00:01, xdelay=00:00:00, mailer=esmtp, pri=30374, relay=mailhost.nam.int.local, dsn=4.0.0, stat=Deferred: Name server: mailhost.nam.int.local: host name lookup
failure
May 16 17:09:41 host01f sendmail[28781]: [ID 801593 mail.info] u4GM9ewi028781: to=User_One@ABC.com, ctladdr=user1 (63184/426), delay=00:00:01, xdelay=00:00:01,
mailer=relay, pri=30073, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (u4GM9e3L028782 Message accepted for delivery)
May 16 17:20:37 host01f sendmail[2833]: [ID 801593 mail.info] u4GM9e3L028782: to=<User_One@ABC.com>, ctladdr=<user1@host01f.nam.int.local> (63184/426),
delay=00:10:57, xdelay=00:00:01, mailer=esmtp, pri=120374, relay=mailhost.nam.int.local, dsn=4.0.0, stat=Deferred: Name server: mailhost.nam.int.local: host name
lookup failure
May 16 17:35:37 host01f sendmail[8249]: [ID 801593 mail.info] u4GM9e3L028782: to=<User_One@ABC.com>, ctladdr=<user1@host01f.nam.int.local> (63184/426),
delay=00:25:57, xdelay=00:00:01, mailer=esmtp, pri=210374, relay=mailhost.nam.int.local, dsn=4.0.0, stat=Deferred: Name server: mailhost.nam.int.local: host name
lookup failure
May 16 17:50:37 host01f sendmail[13638]: [ID 801593 mail.info] u4GM9e3L028782: to=<User_One@ABC.com>, ctladdr=<user1@host01f.nam.int.local> (63184/426),
delay=00:40:57, xdelay=00:00:01, mailer=esmtp, pri=300374, relay=mailhost.nam.int.local, dsn=4.0.0, stat=Deferred: Name server: mailhost.nam.int.local: host name
lookup failure
May 16 17:54:21 host01f sendmail[14784]: [ID 702911 mail.warning] gethostbyaddr(192.168.224.2) failed: 1