Day11 发送邮件时报错 UnicodeDecodeError

一开始我以为是我写的程序有问题，后来尝试执行了前一期其他班同学的作业，发现返回的结果都是这个，我猜想是不是系统方面的问题，求大神帮忙解答。跪谢！

错误代码如下：

Traceback (most recent call last):
  File "day11_training1.py", line 32, in <module>
    yag.send(recipients,'19100205 ss412231878',wechat_word)
  File "C:\Users\33\Anaconda3\lib\site-packages\yagmail\sender.py", line 144, in send
    self.login()
  File "C:\Users\33\Anaconda3\lib\site-packages\yagmail\sender.py", line 243, in login
    self._login(self.credentials)
  File "C:\Users\33\Anaconda3\lib\site-packages\yagmail\sender.py", line 189, in _login
    self.smtp = self.connection(self.host, self.port, **self.kwargs)
  File "C:\Users\33\Anaconda3\lib\smtplib.py", line 1031, in __init__
    source_address)
  File "C:\Users\33\Anaconda3\lib\smtplib.py", line 261, in __init__
    fqdn = socket.getfqdn()
  File "C:\Users\33\Anaconda3\lib\socket.py", line 676, in getfqdn
    hostname, aliases, ipaddrs = gethostbyaddr(name)
UnicodeDecodeError: 'utf-8' codec can't decode byte 0xc8 in position 2: invalid continuation byte

Start with day11_training1.py and reproduce the traceback at yagmail.send, then inspect the Python smtplib and socket.getfqdn calls shown in the stack trace. Compare the failing environment with the other reported executions and document the confirmed cause and resolution.