zabbix sendmail(python)

#!/usr/bin/python
#coding:utf-8
import smtplib
from email.mime.text import MIMEText
import sys
mail_host = 'smtp.163.com'
mail_user = 'username'
mail_pass = 'password'
mail_postfix = '163.com'
def send_mail(to_list,subject,content):
me = mail_user+"<"+mail_user+"@"+mail_postfix+">"
msg = MIMEText(content)
msg['Subject'] = subject
msg['From'] = me
msg['to'] = to_list
try:
s = smtplib.SMTP()
s.connect(mail_host)
s.login(mail_user,mail_pass)
s.sendmail(me,to_list,msg.as_string())
s.close()
returnTrue
except Exception,e:
print str(e)
returnFalse
if __name__ == "__main__":
send_mail(sys.argv[1], sys.argv[2], sys.argv[3])