Sendmail Erro

Estou com alguns erros no sendmail que ainda não consegui resolver.

May 22 08:36:15 LvsCedro sendmail[16422]: n4MBaFTB016422: localhost [127.0.0.1] did not issue MAIL/EXPN/VRFY/ETRN during connection to MTA
May 22 08:36:16 LvsCedro sendmail[16423]: n4MBaFKD016423: from=apache, size=1337, class=-60, nrcpts=1, msgid=<[email protected]>, relay=apache@localhost
May 22 08:36:16 LvsCedro sendmail[16424]: n4MBaGpZ016424: from=<[email protected]>, size=1471, class=-60, nrcpts=1, msgid=<[email protected]>, proto=ESMTP, daemon=MTA, relay=localhost [127.0.0.1]
May 22 08:36:16 LvsCedro sendmail[16423]: n4MBaFKD016423: [email protected], ctladdr=apache (48/48), delay=00:00:01, xdelay=00:00:00, mailer=relay, pri=139337, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (n4MBaGpZ016424 Message accepted for delivery)
May 22 08:36:17 LvsCedro sendmail[16427]: n4MBaGLm016427: from=apache, size=995, class=-60, nrcpts=1, msgid=<[email protected]>, relay=apache@localhost
May 22 08:36:17 LvsCedro sendmail[16428]: n4MBaHl5016428: <[email protected]>... User unknown
May 22 08:36:17 LvsCedro sendmail[16427]: n4MBaGLm016427: [email protected], ctladdr=apache (48/48), delay=00:00:01, xdelay=00:00:00, mailer=relay, pri=138995, relay=[127.0.0.1] [127.0.0.1], dsn=5.1.1, stat=User unknown
May 22 08:36:17 LvsCedro sendmail[16428]: n4MBaHl5016428: from=<[email protected]>, size=995, class=0, nrcpts=0, proto=ESMTP, daemon=MTA, relay=localhost [127.0.0.1]
May 22 08:36:17 LvsCedro sendmail[16427]: n4MBaGLm016427: n4MBaGLn016427: DSN: User unknown
May 22 08:36:17 LvsCedro sendmail[16428]: n4MBaHl7016428: from=<>, size=2634, class=0, nrcpts=1, msgid=<[email protected]>, proto=ESMTP, daemon=MTA, relay=localhost [127.0.0.1]
May 22 08:36:17 LvsCedro sendmail[16427]: n4MBaGLn016427: to=apache, delay=00:00:00, xdelay=00:00:00, mailer=relay, pri=30000, relay=[127.0.0.1] [127.0.0.1], dsn=2.0.0, stat=Sent (n4MBaHl7016428 Message accepted for delivery)
May 22 08:36:17 LvsCedro sendmail[16429]: n4MBaHl7016428: to=root, delay=00:00:00, xdelay=00:00:00, mailer=local, pri=32839, dsn=2.0.0, stat=Sent
May 22 08:36:50 LvsCedro sendmail[16426]: n4MBaGpZ016424: to=<[email protected]>, ctladdr=<[email protected]> (48/48), delay=00:00:34, xdelay=00:00:34, mailer=esmtp, pri=229471, relay=gmail-smtp-in.l.google.com. [72.14.247.27], dsn=5.0.0, stat=Service unavailable
May 22 08:36:50 LvsCedro sendmail[16426]: n4MBaGpZ016424: n4MBaopZ016426: DSN: Service unavailable
May 22 08:36:50 LvsCedro sendmail[16426]: n4MBaopZ016426: to=root, delay=00:00:00, xdelay=00:00:00, mailer=local, pri=30000, dsn=2.0.0, stat=Sent

Obrigado