Ubuntu 配置sendmail
1. unable to qualify my own domain name (windriver-OptiPlex-755) -- using short name
修改 /etc/hosts, 主机名 windriver-OptiPlex-755 后添加 .localdomain.com
127.0.0.1 localhost
127.0.1.1 windriver-OptiPlex-755.localdomain.com windriver-OptiPlex-755
2.stat=User unknown
DSN: User unknown
修改 /etc/mail/sendmail.cf
# "Smart" relay host (may be null)
DS
重启 sendmail 服务：
sudo /etc/init.d/sendmail restart
3. stat=Deferred: Connection refused by
/etc/mail/sendmail.mc
Port=smtp,Addr=127.0.0.1')dnl
Addr改为 0.0.0.0
重启 sendmail 服务：
sudo /etc/init.d/sendmail restart
参考：http://blog.csdn.net/cheng830306/article/details/7629229
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