.msmtprc

#Set default values for all following accounts
 defaults
 logfile Mail/msmtp.log  #发件记录放在这个文件中
#tls on
 tls_trust_file /etc/ssl/certs/ca-certificates.crt

# Gmail service
account gmail           
host smtp.gmail.com
port 587
auth on
tls on

account XXXX : gmail
from XXXXXXX@gmail.com
user "XXXXXX@gmail.com"
password *********

# 163邮箱例子 
account 163
host smtp.163.com 
auth login
from XXXXXXXXX@163.com
tls on
user "XXXXXXXXX"
password "********"

#Default account
account default : 163