python 发送电子邮件 - ConnectionRefusedError: [Errno 111] 连接被拒绝。 请提出一些想法

Question

我在 python 中编写了一个基本函数来使用带有 localhost 的 smtp 发送电子邮件，但它一直失败，但是另一个脚本使用相同的代码可以正常工作。

我的功能：

def send_email_err():

    sender = 'sender@test.com'
    receivers = ['receiver@test.com']

    message = """From: From Person <sender@test.com>
    To: To Person <receiver@test.com>
    Subject: SMTP e-mail test

    This is a test e-mail message.
    """

    try:
        smtpObj = smtplib.SMTP('localhost')
        smtpObj.sendmail(sender, receivers, message)
        print ("Successfully sent email")
    except SMTPException:
        print ("Error: unable to send email")

send_email_err()

我得到的错误是：

    Traceback (most recent call last):
  File "./send_email.py", line 147, in send_email_err
    smtpObj = smtplib.SMTP('localhost')
  File "/usr/lib64/python3.6/smtplib.py", line 251, in __init__
    (code, msg) = self.connect(host, port)
  File "/usr/lib64/python3.6/smtplib.py", line 336, in connect
    self.sock = self._get_socket(host, port, self.timeout)
  File "/usr/lib64/python3.6/smtplib.py", line 307, in _get_socket
    self.source_address)
  File "/usr/lib64/python3.6/socket.py", line 724, in create_connection
    raise err
  File "/usr/lib64/python3.6/socket.py", line 713, in create_connection
    sock.connect(sa)
ConnectionRefusedError: [Errno 111] Connection refused

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "./send_email.py", line 159, in <module>
    send_email_err()
  File "./send_email.py", line 150, in send_email_err
    except SMTPException:
NameError: name 'SMTPException' is not defined

我们是否需要在我执行此脚本的主机上运行 smtp 服务器才能发送此电子邮件。

Answer 1

• First tb：您忘记启动服务器。 打开第二个终端并运行python -m smtpd -n -c DebuggingServer host:port如果您在本地设备上运行它并测试功能

• 第二个错误：您忘记from smtplib import SMTPException

放松你紧张，放松:)