python随机服务器的双线出口ip发送邮件

#-*- coding:utf-8 -*-
import smtplib
import sys
import random
import socket
from email.mime.text import MIMEText

true_socket = socket.socket
def bound_socket(*a, **k):
    sock = true_socket(*a, **k)

#随机出一个IP
    ip_list = ['XXX.XXX.XXX.XXX','XXX.XXX.XXX.XXX']
    index = random.randint(1,1000000)
    ip_index = 0
    if index>=1 and index<=500000:
        ip_index = 0
    else:
        ip_index = 1
    ip = ip_list[ip_index]
    sock.bind((ip, 0))
    return sock

#绑定IP
socket.socket = bound_socket

mail_host="smtp.XXX.XXX"  #smtp
mail_user="XXX@XXX.XXX"    #user
mail_pass="XXX"   #pwd
mail_postfix="XXX.com"  #发件箱的后缀

def send_mail(to_list,sub,content):
    me="<XXX@XXX.XXX>"
    msg = MIMEText(content,_subtype='html',_charset='utf-8')
    msg["Accept-Language"]="zh-CN"
    msg["Accept-Charset"]="ISO-8859-1,utf-8"
    msg['Subject'] = sub
    msg['From'] = me
    msg['To'] = ";".join(to_list)
    try:
        server = smtplib.SMTP()
        server.connect(mail_host)
        server.login(mail_user,mail_pass)
        server.sendmail(me, to_list, msg.as_string())
        server.close()
        return True
    except Exception, e:
            return e
        
if __name__ == '__main__':
    #获取参数
    mailto = [sys.argv[1]]
    title = sys.argv[2]
    content = sys.argv[3]

status = send_mail(mailto,title,content)
    
    if status == True:
        print 1
    else:
        print status