Python　メール自動送信設定について　エラー　[WinError 10060]

下記内容のコードを打つとエラーがでます```Python

Python
1import datetime
2import smtplib
3import ssl
4from email.mime.text import MIMEText
5
6import sys, codecs
7sys.stdout = codecs.getwriter('utf-8')(sys.stdout)
8
9gmail_account = '@gmail.com'
10gmail_password = ''
11mail_to = '@gmail.com'
12send_name = 'あき'
13
14today_date = datetime.date.today()
15delivery_date = today_date + datetime.timedelta(days=7)
16print(today_date,delivery_date)
17
18msg = MIMEText(body, 'html')
19print(msg)
20
21msg['Subject'] = subject
22msg['To'] = mail_to
23msg['From'] = gmail_account
24print(msg)
25
26server = smtplib.SMTP_SSL('smtp.gmail.com', 456,context=ssl.create_default_context())
27server.login(gail_account, gmail_password)
28server.send_message(msg)
29server.close()
30print('送信完了')
31
32---------------------------------------------------------------------------
33TimeoutError                              Traceback (most recent call last)
34<ipython-input-20-237a61c6c7c5> in <module>
35----> 1 server = smtplib.SMTP_SSL('smtp.gmail.com', 456,context=ssl.create_default_context())
36      2 server.login(gail_account, gmail_password)
37      3 server.send_message(msg)
38      4 server.close()
39      5 print('送信完了')
40
41~\anaconda3\lib\smtplib.py in __init__(self, host, port, local_hostname, keyfile, certfile, timeout, source_address, context)
42   1030                                                      keyfile=keyfile)
43   1031             self.context = context
44-> 1032             SMTP.__init__(self, host, port, local_hostname, timeout,
45   1033                     source_address)
46   1034 
47
48~\anaconda3\lib\smtplib.py in __init__(self, host, port, local_hostname, timeout, source_address)
49    251 
50    252         if host:
51--> 253             (code, msg) = self.connect(host, port)
52    254             if code != 220:
53    255                 self.close()
54
55~\anaconda3\lib\smtplib.py in connect(self, host, port, source_address)
56    335             port = self.default_port
57    336         sys.audit("smtplib.connect", self, host, port)
58--> 337         self.sock = self._get_socket(host, port, self.timeout)
59    338         self.file = None
60    339         (code, msg) = self.getreply()
61
62~\anaconda3\lib\smtplib.py in _get_socket(self, host, port, timeout)
63   1036             if self.debuglevel > 0:
64   1037                 self._print_debug('connect:', (host, port))
65-> 1038             new_socket = socket.create_connection((host, port), timeout,
66   1039                     self.source_address)
67   1040             new_socket = self.context.wrap_socket(new_socket,
68
69~\anaconda3\lib\socket.py in create_connection(address, timeout, source_address)
70    806     if err is not None:
71    807         try:
72--> 808             raise err
73    809         finally:
74    810             # Break explicitly a reference cycle
75
76~\anaconda3\lib\socket.py in create_connection(address, timeout, source_address)
77    794             if source_address:
78    795                 sock.bind(source_address)
79--> 796             sock.connect(sa)
80    797             # Break explicitly a reference cycle
81    798             err = None
82
83TimeoutError: [WinError 10060] 接続済みの呼び出し先が一定の時間を過ぎても正しく応答しなかったため、接続できませんでした。または接続済みのホストが応答しなかったため、確立された接続は失敗しました。