#!/usr/bin/python import dns.resolver import os import httplib iplist=[] appdomain="mail.qq.com" def get_iplist(domain=""): try: A = dns.resolver.query(domain,'A') except Exception,e: print "dns resolver error:"+str(e) return for i in A.response.answer: for j in i.items: iplist.append(j.address) return True def checkip(ip): checkurl=ip+":80" getcontent="" httplib.socket.setdefaulttimeout(5) conn=httplib.HTTPConnection(checkurl) try: conn.request("GET","/",headers = {"Host":appdomain}) r=conn.getresponse() getcontent = r.read(15) finally: if getcontent=="<!doctype html>": print ip+" [OK]" else: print ip+" [ERROR]" if __name__=="__main__": if get_iplist(appdomain) and len(iplist)>0: for ip in iplist: checkip(ip) else: print "dns resolver error"