mailx

apt-get install mailx and sendmail

create ~/.mailrc in root account

在~/.mailrc中设置如下:

set smtp-use-starttls
set ssl-verify=ignore
set smtp=smtp://smtp.gmail.com:587
set smtp-auth=login
set smtp-auth-user=USER_NAME@gmail.com
set smtp-auth-password=PASSWORD
set from="USERNAME@gmail.com(NAME)"

mailx -s "subject" XXX@YYY.com < content.file

note : please check your network in business.
telnet smtp.gmail.com 587 ?