同一个邮件系统绑定了两个域名，A域名可以正常收发邮件，B域名只能发送，不能接收
B域名的退信内容如下：
Delivery to the following recipient failed permanently:

    jony@moyea.com.cn

Technical details of permanent failure:
Google tried to deliver your message, but it was rejected by the recipient domain. We recommend contacting the other email provider for further information about the cause of this error. The error that the other server returned was: 554 554 5.7.1 <jony@moyea.com.cn>: Relay access denied (state 14).

----- Original message -----

postfix/smtpd[2120]: NOQUEUE: reject: RCPT from unknown[220.181.15.21]: 554 5.7.1 <jony@moyea.com.cn>: Relay access denied; from=<vista_it@126.com> to=<jony
@moyea.com.cn> proto=ESMTP helo=<m15-21.126.com>

l postfix/smtpd[7933]: NOQUEUE: reject: RCPT from unknown[183.17.100.178]: 553 5.7.1 <sinfor@moyea.com.cn>: Sender address rejected: not logged in; from=<sinf
or@moyea.com.cn> to=<www@moyea.com.cn> proto=SMTP helo=<sinfors>
Nov 24 18:21:51 mail postfix/smtpd[7933]: lost connection after RCPT from unknown[183.17.100.178]
Nov 24 18:21:51 mail postfix/smtpd[7933]: disconnect from unknown[183.17.100.178]
Nov 24 18:22:41 mail postfix/smtpd[7933]: connect from unknown[183.17.100.178]
Nov 24 18:22:41 mail postfix/smtpd[7933]: NOQUEUE: reject: RCPT from unknown[183.17.100.178]: 553 5.7.1 <sinfor@moyea.com.cn>: Sender address rejected: not logged in; from=<sinf
or@moyea.com.cn> to=<www@moyea.com.cn> proto=SMTP helo=<sinfors>
Nov 24 18:22:41 mail postfix/smtpd[7933]: lost connection after RCPT from unknown[183.17.100.178]
Nov 24 18:22:41 mail postfix/smtpd[7933]: disconnect from unknown[183.17.100.178]
Nov 24 18:23:32 mail postfix/smtpd[7933]: connect from unknown[183.17.100.178]
Nov 24 18:23:32 mail postfix/smtpd[7933]: NOQUEUE: reject: RCPT from unknown[183.17.100.178]: 553 5.7.1 <sinfor@moyea.com.cn>: Sender address rejected: not logged in; from=<sinf
or@moyea.com.cn> to=<www@moyea.com.cn> proto=SMTP helo=<sinfors>
看起来好像moyea.com.cn这域名拒绝接收所有邮件