Traceback (most recent call last): File "D:/python/email的模块的使用/完整的邮件.py", line 22, in <module> server = smtplib.SMTP(smtpserver, 25) File "D:\程序\python3.5\lib\smtplib.py", line 251, in _init (code, msg) = self.connect(host, port) File "D:\程序\python3.5\lib\smtplib.py", line 335, in connect self.sock = self._get_socket(host, port, self.timeout) File "D:\程序\python3.5\lib\smtplib.py", line 306, in _get_socket self.source_address) File "D:\程序\python3.5\lib\socket.py", line 711, in create_connection raise err File "D:\程序\python3.5\lib\socket.py", line 702, in create_connection sock.connect(sa)

<strong>这是什么导致的</strong>