客户端反馈

			
SMTP ERROR: RCPT TO command failed: 501 5.1.3 Bad recipient address syntax
2015-09-23 08:06:12	SMTP Error: The following recipients failed: root@example.com: Bad recipient address syntax
<strong>SMTP Error: The following recipients failed: root@example.com: Bad recipient address syntax			
			
			

/var/log/maillog

			
Sep 23 16:12:00 smtp1 postfix/smtpd[982]: NOQUEUE: reject: RCPT from unknown[202.130.101.34]: 554 5.7.1 <netkiller@msn.com>: Relay access denied; from=<root@mail.example.com> to=<netkiller@msn.com> proto=ESMTP helo=<localhost.localdomain>
						
			

问题原因是 mynetworks 配置项没有放行客户端

[root@netkiller.github.io ~]# postconf | grep permit_mynetworks
smtpd_recipient_restrictions = permit_mynetworks, reject_unauth_destination			
			

设置mynetworks配置项，允许IP使用SMTP发送邮件

[root@netkiller.github.io ~]# postconf -n | grep mynetworks
mynetworks = 202.130.101.34