? ：监控的日志信息：
mail.bj.com的日志信息：
[root@mail ~]# tail -f /var/log/maillog
Mar 23 15:46:07 mail dovecot: pop3-login: Aborted login: user=<user2@bj.com>, method=PLAIN, rip=::ffff:10.106.6.190, lip=::ffff:10.106.6.254
Mar 23 15:46:07 mail dovecot: pop3-login: Login: user=<user2>, method=PLAIN, rip=::ffff:10.106.6.190, lip=::ffff:10.106.6.254
Mar 23 15:46:07 mail dovecot: POP3(user2): Disconnected: Logged out top=0/0, retr=0/0, del=0/3, size=5025
Mar 23 15:46:13 mail sendmail[2298]: q2N7kCbh002298: from=<user1@bj.com>, size=1458, class=0, nrcpts=1, msgid=<2012032316322753227112@bj.com>, proto=ESMTP, daemon=MTA, relay=[10.106.6.190]
Mar 23 15:46:16 mail sendmail[2300]: q2N7kCbh002298: to=<user3@sh.com>, ctladdr=<user1@bj.com> (500/500), delay=00:00:03, xdelay=00:00:03, mailer=esmtp, pri=121458, relay=mail.sh.com. [10.106.6.253], dsn=2.0.0, stat=Sent (q2N8W6jM003583 Message accepted for delivery)
Mar 23 15:48:38 mail sendmail[2307]: q2N7mc6a002307: from=<user3@sh.com>, size=3353, class=0, nrcpts=1, msgid=<001a01cd08cf$bcf83cd0$c8066a0a@hp3aea877158e2>, proto=ESMTP, daemon=MTA, relay=[10.106.6.253]
Mar 23 15:48:38 mail sendmail[2308]: q2N7mc6a002307: to=<user1@bj.com>, delay=00:00:00, xdelay=00:00:00, mailer=local, pri=33514, dsn=2.0.0, stat=Sent
Mar 23 15:48:54 mail dovecot: pop3-login: Aborted login: user=<user1@bj.com>, method=PLAIN, rip=::ffff:10.106.6.190, lip=::ffff:10.106.6.254
Mar 23 15:48:54 mail dovecot: pop3-login: Login: user=<user1>, method=PLAIN, rip=::ffff:10.106.6.190, lip=::ffff:10.106.6.254
Mar 23 15:48:54 mail dovecot: POP3(user1): Disconnected: Logged out top=0/0, retr=1/3623, del=0/1, size=3606
Mar 23 15:51:04 mail sendmail[2320]: q2N7p4Pg002320: from=<user1@bj.com>, size=1470, class=0, nrcpts=1, msgid=<2012032316372380506613@bj.com>, proto=ESMTP, daemon=MTA, relay=[10.106.6.190]
Mar 23 15:51:04 mail sendmail[2322]: q2N7p4Pg002320: to=<user3@sh.com>, ctladdr=<user1@bj.com> (500/500), delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=121470, relay=mail.sh.com. [10.106.6.253], dsn=2.0.0, stat=Sent (q2N8aucK003603 Message accepted for delivery)
Mar 23 15:52:25 mail sendmail[2325]: q2N7qPlW002325: from=<user3@sh.com>, size=3514, class=0, nrcpts=1, msgid=<002401cd08d0$4378c360$c8066a0a@hp3aea877158e2>, proto=ESMTP, daemon=MTA, relay=[10.106.6.253]
Mar 23 15:52:25 mail sendmail[2326]: q2N7qPlW002325: to=<user1@bj.com>, delay=00:00:00, xdelay=00:00:00, mailer=local, pri=33675, dsn=2.0.0, stat=Sent
Mar 23 15:52:34 mail dovecot: pop3-login: Aborted login: user=<user1@bj.com>, method=PLAIN, rip=::ffff:10.106.6.190, lip=::ffff:10.106.6.254
Mar 23 15:52:34 mail dovecot: pop3-login: Login: user=<user1>, method=PLAIN, rip=::ffff:10.106.6.190, lip=::ffff:10.106.6.254
Mar 23 15:52:34 mail dovecot: POP3(user1): Disconnected: Logged out top=0/0, retr=1/3786, del=0/2, size=7375
mail.sh.com的日志信息：
[root@mail ~]# tail -f /var/log/maillog
Mar 23 16:24:06 mail dovecot: pop3-login: Login: user=<user3>, method=PLAIN, rip=::ffff:10.106.6.200, lip=::ffff:10.106.6.253
Mar 23 16:24:06 mail dovecot: POP3(user3): Disconnected: Logged out top=0/0, retr=0/0, del=0/0, size=0
Mar 23 16:24:07 mail dovecot: pop3-login: Login: user=<user4>, method=PLAIN, rip=::ffff:10.106.6.200, lip=::ffff:10.106.6.253
Mar 23 16:24:07 mail dovecot: POP3(user4): Disconnected: Logged out top=0/0, retr=0/0, del=0/0, size=0
Mar 23 16:32:07 mail sendmail[3583]: q2N8W6jM003583: from=<user1@bj.com>, size=1617, class=0, nrcpts=1, msgid=<2012032316322753227112@bj.com>, proto=ESMTP, daemon=MTA, relay=mail.bj.com [10.106.6.254]
Mar 23 16:32:08 mail sendmail[3584]: q2N8W6jM003583: to=<user3@sh.com>, delay=00:00:01, xdelay=00:00:01, mailer=local, pri=31791, dsn=2.0.0, stat=Sent
Mar 23 16:32:51 mail dovecot: pop3-login: Login: user=<user3>, method=PLAIN, rip=::ffff:10.106.6.200, lip=::ffff:10.106.6.253
Mar 23 16:32:51 mail dovecot: POP3(user3): Disconnected: Logged out top=0/0, retr=1/1898, del=1/1, size=1881
Mar 23 16:34:29 mail sendmail[3595]: q2N8YTvQ003595: from=<user3@sh.com>, size=3193, class=0, nrcpts=1, msgid=<001a01cd08cf$bcf83cd0$c8066a0a@hp3aea877158e2>, proto=SMTP, daemon=MTA, relay=[10.106.6.200]
Mar 23 16:34:29 mail sendmail[3597]: q2N8YTvQ003595: to=<user1@bj.com>, ctladdr=<user3@sh.com> (500/500), delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=123193, relay=mail.bj.com. [10.106.6.254], dsn=2.0.0, stat=Sent (q2N7mc6a002307 Message accepted for delivery)
Mar 23 16:36:56 mail sendmail[3603]: q2N8aucK003603: from=<user1@bj.com>, size=1629, class=0, nrcpts=1, msgid=<2012032316372380506613@bj.com>, proto=ESMTP, daemon=MTA, relay=mail.bj.com [10.106.6.254]
Mar 23 16:36:56 mail sendmail[3604]: q2N8aucK003603: to=<user3@sh.com>, delay=00:00:00, xdelay=00:00:00, mailer=local, pri=31803, dsn=2.0.0, stat=Sent
Mar 23 16:37:04 mail dovecot: pop3-login: Login: user=<user3>, method=PLAIN, rip=::ffff:10.106.6.200, lip=::ffff:10.106.6.253
Mar 23 16:37:04 mail dovecot: POP3(user3): Disconnected: Logged out top=0/0, retr=1/1909, del=1/1, size=1892
Mar 23 16:38:16 mail sendmail[3611]: q2N8cGVM003611: from=<user3@sh.com>, size=3354, class=0, nrcpts=1, msgid=<002401cd08d0$4378c360$c8066a0a@hp3aea877158e2>, proto=SMTP, daemon=MTA, relay=[10.106.6.200]
Mar 23 16:38:16 mail sendmail[3613]: q2N8cGVM003611: to=<user1@bj.com>, ctladdr=<user3@sh.com> (500/500), delay=00:00:00, xdelay=00:00:00, mailer=esmtp, pri=123354, relay=mail.bj.com. [10.106.6.254], dsn=2.0.0, stat=Sent (q2N7qPlW002325 Message accepted for delivery)
《完》
附件下载：
具体下载目录在 /2012年资料/5月/6日/Linux下Mail服务器应用之Sendmail邮件系统的一个案例/