肖建彬的博客

作者: 肖建彬 | 可以转载, 转载时务必以超链接形式标明文章原始出处和作者信息及版权声明
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/etc/postfix/main.cf

smtpd_peername_lookup = no

Available in Postfix version 2.3 and later:

smtpd_peername_lookup (yes)
Attempt to look up the SMTP client hostname, and
verify that the name matches the client IP address.

http://www.postfix.org/postconf.5.html#smtpd_peername_lookup

Tags: Postfix