在sendmail，命令发送邮件时提示 

inux : inet_protocols: IPv6 support is disabled: Address family not supported by protocol

vim /etc/postfix/main.cf 

inet_protocols = all --改为->inet_protocols = ipv4

service postfix restar

1. Edit the main Postfix configuration :

2. Locate the “inet_protocols” statement :

inet_protocols = ipv4

inux : inet_protocols: IPv6 support is disabled: Address family not supported by protocol

原文：http://www.cnblogs.com/wplong/p/7338063.html