监控linux服务器是否能登陆 邮件报警

import smtplib
from email.mime.text import MIMEText
import telnetlib
import time
def SendEmail(fromAdd,toAdd,subject,text):

    _pwd = "Yeer2016@sudai" #授权码

    msg = MIMEText(text)
    msg["Subject"] = subject
    msg["From"] = fromAdd
    msg["To"] = toAdd
    try:
        s = smtplib.SMTP_SSL("smtp.sudaizhijia.com", 465)
        s.login(fromAdd, _pwd)
        s.sendmail(fromAdd, toAdd, msg.as_string())
        s.quit()
        print ("Success!")
    except smtplib.SMTPException:
        print('Falied!')
if __name__=='__main__':
    server_list = ["47.93.33.37","59.110.142.122","47.93.44.44","1.8.15.2","47.94.239.155","47.93.53.16","47.93.216.61","47.93.44.44","39.105.94.61","59.110.173.167","59.110.142.122","47.93.33.37","39.106.78.73","  47.95.10.116","39.106.47.33","39.105.94.61"]
    while True:
        for i in server_list:
            time.sleep(10)
            try:
                telnetlib.Telnet(i, 22)
            except OSError:
                from_="tech-report@sudaizhijia.com" #你的邮箱 OSError发件地址
                to_sender_address_list = ["wangdong@sudaizhijia.com"] #收件地址
                subject = "服务器登录端口检查 " #邮件标题
                text= '您的服务器IP：%s 22 端口 Telnet 不通了 请及时查看'%i #邮件内容

                for i in to_sender_address_list:
                    SendEmail(from_,i,subject,text)
                    time.sleep(30)