问Python DNS库- DNS.Base.TimeoutError:超时

EN

Traceback (most recent call last):
  File "3.py", line 8, in <module>
    if validate_email(line[0],check_mx=True,verify=False):
  File "/usr/local/lib/python2.7/dist-packages/validate_email.py", line 134, in validate_email
    mx_hosts = get_mx_ip(hostname)
  File "/usr/local/lib/python2.7/dist-packages/validate_email.py", line 102, in get_mx_ip
    MX_DNS_CACHE[hostname] = DNS.mxlookup(hostname)
  File "/usr/local/lib/python2.7/dist-packages/DNS/lazy.py", line 51, in mxlookup
    l = dnslookup(name, qtype = 'mx')
  File "/usr/local/lib/python2.7/dist-packages/DNS/lazy.py", line 34, in dnslookup
    result = Base.DnsRequest(name=name, qtype=qtype).req()
  File "/usr/local/lib/python2.7/dist-packages/DNS/Base.py", line 231, in req
    self.sendUDPRequest(server)
  File "/usr/local/lib/python2.7/dist-packages/DNS/Base.py", line 260, in sendUDPRequest
    r=self.processUDPReply()
  File "/usr/local/lib/python2.7/dist-packages/DNS/Base.py", line 119, in processUDPReply
    raise TimeoutError, 'Timeout'
DNS.Base.TimeoutError: Timeout