yum install sendmail m4 sendmail-cf
vim /etc/mail/sendmail.mc添加
define(`SMART_HOST', `bjmail.itv.cn')dnl
vim /etc/mail/access 添加
Connect:10.141.10 RELAY
生效
mv /etc/mail/sendmail.cf /etc/mail/sendmail.cf.bak
m4 /etc/mail/sendmail.mc >/etc/mail/sendmail.cf
service sendmail restart