logging.handlers.SMTPHandler 提高 smtplib.SMTPAuthenticationError

logging.handlers.SMTPHandler raises smtplib.SMTPAuthenticationError

我在 Verizon 和 Gmail 上试过了。两台服务器均拒绝身份验证。 Gmail 给我发邮件说它拒绝登录尝试,因为连接没有使用 "modern security".
我想知道如何通过此日志记录处理程序使用现代安全性。

logging.handlers.SMTPHandler(mailhost=('', 25),
                             fromaddr='',
                             toaddrs='',
                             subject='',
                             credentials=('username','password'),
                             secure=())

Gmail 问题:

  • 此处未提及。查看有关 Gmail 应用程序身份验证的其他答案。

威瑞森问题:

  • 一些邮件提交服务器可能只接受端口 465 上的 SMTPS。详见 What is the difference between ports 465 and 587?Verizon 邮件提交服务器 smtp.verizon.net 就是这样的一个例子。
  • SMTPHandler默认不支持SMTPS。您可以对功能进行猴子修补。

解决方案:

  • 这会强制任何服务器使用 SMTPS。
  • 更彻底的修复方法是使用标志编辑 class 以启用 SMTPS。

  1. 将下面编辑的发射函数粘贴到相关文件中。
  2. 然后设置

    logging.handlers.SMTPHandler.emit = emit
    

默认/logging/handlers.pylogging.handlers.SMTPHandler.emit函数

# Class SMTPHandler...
def emit(self, record):
    """
    Emit a record.

    Format the record and send it to the specified addressees.
    """
    try:
        import smtplib
        from email.utils import formatdate
        port = self.mailport
        if not port:
            port = smtplib.SMTP_PORT
        smtp = smtplib.SMTP(self.mailhost, port, timeout=self._timeout)
        msg = self.format(record)
        msg = "From: %s\r\nTo: %s\r\nSubject: %s\r\nDate: %s\r\n\r\n%s" % (
                        self.fromaddr,
                        ",".join(self.toaddrs),
                        self.getSubject(record),
                        formatdate(), msg)
        if self.username:
            if self.secure is not None:
                smtp.ehlo()
                smtp.starttls(*self.secure)
                smtp.ehlo()
            smtp.login(self.username, self.password)
        smtp.sendmail(self.fromaddr, self.toaddrs, msg)
        smtp.quit()
    except (KeyboardInterrupt, SystemExit):
        raise
    except:
        self.handleError(record)

修改后的emit函数

def emit(self, record):
    """
    Overwrite the logging.handlers.SMTPHandler.emit function with SMTP_SSL.
    Emit a record.
    Format the record and send it to the specified addressees.
    """
    try:
        import smtplib
        from email.utils import formatdate
        port = self.mailport
        if not port:
            port = smtplib.SMTP_PORT
        smtp = smtplib.SMTP_SSL(self.mailhost, port, timeout=self._timeout)
        msg = self.format(record)
        msg = "From: %s\r\nTo: %s\r\nSubject: %s\r\nDate: %s\r\n\r\n%s" % (self.fromaddr, ", ".join(self.toaddrs), self.getSubject(record), formatdate(), msg)
        if self.username:
            smtp.ehlo()
            smtp.login(self.username, self.password)
        smtp.sendmail(self.fromaddr, self.toaddrs, msg)
        smtp.quit()
    except (KeyboardInterrupt, SystemExit):
        raise
    except:
        self.handleError(record)

对于任何回到这里的人,这里是我如何让 SMTPHandler 与 Gmail 一起工作:

eh = SMTPHandler(mailhost=('smtp.gmail.com', 587),
                fromaddr=from_addr,
                toaddrs=to_addrs,
                subject=subject,
                credentials=(username, password),
                secure=())

to_addrs 变量在我的示例中是一个字符串。我不确定它是否可以是数组或者应该是 space 或逗号分隔的字符串。 username 变量包含域,如下所示:foo@gmail.com.

大多数指南说使用端口 465,如果您好奇,这里是 difference。但是,当我尝试使用端口 465 时,出现 SMTP 超时错误:

Traceback (most recent call last):
File "/usr/local/lib/python3.5/smtplib.py", line 386, in getreply
  line = self.file.readline(_MAXLINE + 1)
File "/usr/local/lib/python3.5/socket.py", line 571, in readinto
  return self._sock.recv_into(b)
socket.timeout: timed out

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
File "/usr/local/lib/python3.5/logging/handlers.py", line 972, in emit
  smtp = smtplib.SMTP(self.mailhost, port, timeout=self.timeout)
File "/usr/local/lib/python3.5/smtplib.py", line 251, in __init__
  (code, msg) = self.connect(host, port)
File "/usr/local/lib/python3.5/smtplib.py", line 337, in connect
  (code, msg) = self.getreply()
File "/usr/local/lib/python3.5/smtplib.py", line 390, in getreply
  + str(e))
smtplib.SMTPServerDisconnected: Connection unexpectedly closed: timed out

我切换到587端口,Google认证成功。消息已发送。