Sep  4 17:23:52 UNIX sendmail[1950]: g849Npp01950: from=root, size=25, 
class=0, nrcpts=1, 
msgid=<200209040923.g849Npp01950@redhat.pfcc.com.cn>,
relay=root@localhost
Sep  4 17:23:55 UNIX sendmail[1950]: g849Npp01950: to=lzy@fcceec.net, 
ctladdr=root (0/0), delay=00:00:04, xdelay=00:00:03, mailer=esmtp, pri=30025, 
relay=fcceec.net. [10.152.8.2], dsn=2.0.0, stat=Sent (Message queued)
/var/log/messages

Sep  3 08:30:17 UNIX login[1275]: FAILED LOGIN 2 FROM (null) FOR suying, 
Authentication failure
Sep  4 17:40:28 UNIX  -- suying[2017]: LOGIN ON pts/1 BY suying FROM
fcceec.www.ec8.pfcc.com.cn
Sep  4 17:40:39 UNIX su(pam_unix)[2048]: session opened for user root by suying(uid=999)