python群发邮件的问题

howema

代码如下：
#! /usr/bin/env python
#coding=gbk

import sys, smtplib, os
from datetime import date
from email.mime.multipart import MIMEMultipart
from email.mime.text import MIMEText
from email.mime.base import MIMEBase
import email.iterators
import email.generator
from email import Encoders
import time



#############
#读取邮件列表
file_object = open('list.txt')
try:
    all_the_text = file_object.readlines( )
finally:
    file_object.close( )
#读取配置文件
mailto_list = all_the_text

file_object = open('set.txt')
try:
    all_the_text = file_object.readlines( )
finally:
    file_object.close( )
set_list = all_the_text


#########格式化配置文件#############
def get_mail_fomat(index):
    return_str = set_list[index]
    return_str = return_str.replace("\n","")
    return_str = return_str.split('=')[1]
    return return_str

##########发送邮件############
def send_mail(to_list,sub,content):
    '''
    to_list:发给谁
    sub:主题
    content:内容
    send_mail("aaa@126.com","sub","content")
    '''
    me=mail_user+"<"+mail_user+"@"+mail_postfix+">"
    msg = MIMEText(content)
    msg['Subject'] = sub
    msg['From'] = me
    #msg['To'] = ";".join(to_list)
    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()
        return True
    except Exception, e:
        print str(e)
        return False
if __name__ == '__main__':
    send_succeed_num = 0
    send_fail_num = 0
    #####################
    #设置服务器，用户名、口令,邮箱的后缀以及标题和内容
    mail_host = get_mail_fomat(0)
    mail_user = get_mail_fomat(1)
    mail_pass = get_mail_fomat(2)
    mail_postfix = get_mail_fomat(3)
    mail_subject = get_mail_fomat(4)
    mail_content = get_mail_fomat(5)

    for i in mailto_list:
        i = i.strip()
        
        if send_mail(i,mail_subject,mail_content):
            send_succeed_num +=1
            print "%s-->发送成功"%i
        else:
            send_fail_num +=1
            print "%s-->发送失败"%i

        time.sleep(1)
    print "\n-------------发送成功%d条" %send_succeed_num
    print "\n-------------发送失败%d条" %send_fail_num
   

在配置文件里放一个邮箱，可以成功发送，放两个以上的邮箱，就全部提示发送失败，请问是什么问题？

lz66

用这个       #msg['To'] = ";".join(to_list) 注释下面的

howema

换了，还是发送失败

howema

测试发现这个程序 发送邮件很不稳定 发送成功了两次 后面又全是发送失败的