yum install sendmail mailx
vi /etc/mail.rc
set from=test@office.com
set smtp=smtp.mxhichina.com
set smtp-auth-user=test@office.com
set smtp-auth-password=123456
set smtp-auth=login
Ubantu
apt-get install sendmail
apt-get install sendmail-cf
apt-get install mialutils
apt-get install mailutils
apt-get uninstall mailutils -y
apt-get uninstall mailutils
apt-get install heirloom-mailx
vi /etc/s-nail.rc
set from=test@office.com
set smtp=smtp.mxhichina.com
set smtp-auth-user=test@office.com
set smtp-auth-password=123456
set smtp-auth=login
原文：https://blog.51cto.com/14142757/2475916