我用命令行发送的时候，一值提示超时
/usr/local/bin/sendEmail -f postmaster@xxx -t "571xxx@qq.com" -s mail.xxx.com -u "111" -o message-charset=utf8 -xu postmaster@xxxx -xpxxxxxx -m "111"
提示
Nov 17 20:39:07 iz942yn9r7wz sendEmail[7267]: ERROR => Timeout while connecting to mail.xxx.com There was no response after 60 seconds.