邮件正常发送时的日志

		
# grep '7905611F797'  maillog
Nov  2 16:07:58 smtp2.example.com postfix/pickup[7377]: 7905611F797: uid=0 from=<root>
Nov  2 16:07:58 smtp2.example.com postfix/cleanup[7683]: 7905611F797: message-id=<20151102080758.GA7677@smtp2.example.com>
Nov  2 16:07:58 smtp2.example.com postfix/qmgr[21697]: 7905611F797: from=<root@mail2.example.com>, size=461, nrcpt=1 (queue active)
Nov  2 16:08:08 smtp2.example.com postfix/smtp[7674]: 7905611F797: to=<skyline.chen@icloud.com>, relay=mx3.mail.icloud.com[17.172.34.64]:25, delay=10, delays=0.04/0/6.2/4.1, dsn=2.5.0, status=sent (250 2.5.0 Ok.)
Nov  2 16:08:08 smtp2.example.com postfix/qmgr[21697]: 7905611F797: removed
		
		

被封IP地址

				
Nov  2 15:25:57 smtp2.example.com postfix/cleanup[6993]: C17AC11F78C: message-id=<20151102072557.C17AC11F78C@mail2.example.com>
Nov  2 15:25:57 smtp2.example.com postfix/bounce[6992]: 0E6FE11F777: sender non-delivery notification: C17AC11F78C
Nov  2 15:25:57 smtp2.example.com postfix/qmgr[21697]: C17AC11F78C: from=<>, size=17147, nrcpt=1 (queue active)
Nov  2 15:25:58 smtp2.example.com postfix/smtp[6928]: C17AC11F78C: to=<cs@example.com>, relay=mx.qiye.163.com[123.125.50.217]:25, delay=0.96, delays=0/0/0.53/0.42, dsn=5.0.0, status=bounced (host mx.qiye.163.com[123.125.50.217] said: 554 DT:SPM mx6, Q9OowEC5hUgGEDdWRyf1AQ--.1S2 1446449158 http://mail.163.com/help/help_spam_16.htm?ip=202.82.201.90&hostid=mx6&time=1446449158 (in reply to end of DATA command))
Nov  2 15:25:58 smtp2.example.com postfix/qmgr[21697]: C17AC11F78C: removed
		
		

发送密度过高

		
Nov  2 15:24:25 smtp2.example.com postfix/smtpd[6940]: 6D21E11F76A: client=unknown[172.18.52.137]
Nov  2 15:24:25 smtp2.example.com postfix/cleanup[6945]: 6D21E11F76A: message-id=<17f164cf2441ad60eb2ce794db4959bf@localhost.localdomain>
Nov  2 15:24:25 smtp2.example.com postfix/qmgr[21697]: 6D21E11F76A: from=<cs@example.com>, size=15050, nrcpt=1 (queue active)
Nov  2 15:24:25 smtp2.example.com postfix/smtp[6922]: 6D21E11F76A: lost connection with mx3.QQ.com[103.7.30.40] while performing the HELO handshake
Nov  2 15:24:30 smtp2.example.com postfix/smtp[6922]: 6D21E11F76A: to=<1141096962@qq.com>, relay=mx2.QQ.com[184.105.206.86]:25, delay=5.2, delays=0.01/0/4.9/0.35, dsn=5.0.0, status=bounced (host mx2.QQ.com[184.105.206.86] said: 550 Connection frequency limited. http://service.mail.qq.com/cgi-bin/help?subtype=1&&id=20022&&no=1000722 (in reply to MAIL FROM command))
Nov  2 15:24:30 smtp2.example.com postfix/bounce[6946]: 6D21E11F76A: sender non-delivery notification: A76A511F777
Nov  2 15:24:30 smtp2.example.com postfix/qmgr[21697]: 6D21E11F76A: removed
		
		

虚假地址，产生 Connection timed out

		
Nov  2 16:32:21 smtp2.example.com postfix/smtp[7732]: 1DCD811F940: to=<1608014274@qqq.com>, relay=none, delay=368099, delays=368069/0.05/30/0, dsn=4.4.1, status=deferred (connect to qqq.com[60.190.249.48]:25: Connection timed out)		
		
		

				# grep 'to=' maillog | grep '15:25:' | wc -l
				592
			

			
# egrep -o "to=<(.*)>, .* Connection timed out" maillog | sed -e "s/to=<\(.*\)>.*/\1/"