如何在python中设置与本地hmail服务器的连接？

Question

我已经在本地机器上设置了hmailserver。我还使用python脚本来读取电子邮件。当我连接到outlook时，python脚本运行良好。但是我的hmailserver的本地连接有问题。我希望脚本连接到我的本地电子邮件服务器（hmailserver）并从那里读取电子邮件。我很难建立这个连接，而且我找不到关于hmailserver和python的好文档

import email
import imaplib

EMAIL = 'user1@test.com'
PASSWORD = 'test123'
SERVER = '0.0.0.0/143'#'smtp-mail.outlook.com'

# connect to the server and go to its inbox
mail = imaplib.IMAP4_SSL(SERVER)
mail.login(EMAIL, PASSWORD)
# we choose the inbox but you can select others
mail.select('inbox')

# we'll search using the ALL criteria to retrieve
# every message inside the inbox
# it will return with its status and a list of ids
status, data = mail.search(None, 'ALL')
# the list returned is a list of bytes separated
# by white spaces on this format: [b'1 2 3', b'4 5 6']
# so, to separate it first we create an empty list
mail_ids = []
# then we go through the list splitting its blocks
# of bytes and appending to the mail_ids list
for block in data:
    # the split function called without parameter
    # transforms the text or bytes into a list using
    # as separator the white spaces:
    # b'1 2 3'.split() => [b'1', b'2', b'3']
    mail_ids += block.split()

# now for every id we'll fetch the email
# to extract its content
for i in mail_ids:
    # the fetch function fetch the email given its id
    # and format that you want the message to be
    status, data = mail.fetch(i, '(RFC822)')

    # the content data at the '(RFC822)' format comes on
    # a list with a tuple with header, content, and the closing
    # byte b')'
    for response_part in data:
        # so if its a tuple...
        if isinstance(response_part, tuple):
            # we go for the content at its second element
            # skipping the header at the first and the closing
            # at the third
            message = email.message_from_bytes(response_part[1])

            # with the content we can extract the info about
            # who sent the message and its subject
            mail_from = message['from']
            mail_subject = message['subject']

            # then for the text we have a little more work to do
            # because it can be in plain text or multipart
            # if its not plain text we need to separate the message
            # from its annexes to get the text
            if message.is_multipart():
                mail_content = ''

                # on multipart we have the text message and
                # another things like annex, and html version
                # of the message, in that case we loop through
                # the email payload
                for part in message.get_payload():
                    # if the content type is text/plain
                    # we extract it
                    if part.get_content_type() == 'text/plain':
                        mail_content += part.get_payload()
            else:
                # if the message isn't multipart, just extract it
                mail_content = message.get_payload()

            # and then let's show its result
            print(f'From: {mail_from}')
            print(f'Subject: {mail_subject}')
            print(f'Content: {mail_content}')

上面是我正在使用的代码，连接到我的outlook电子邮件工作正常（smtp mail.outlook.com）。但是，当我替换服务器以连接到端口143上的本地主机0.0.0.0时，我得到了以下错误

File "c:/Users/yehya/Desktop/relay.py", line 10, in <module>
    mail = imaplib.IMAP4_SSL(SERVER)
  File "C:\Users\yehya\AppData\Local\Programs\Python\Python38\lib\imaplib.py", line 1297, in __init__
    IMAP4.__init__(self, host, port)
  File "C:\Users\yehya\AppData\Local\Programs\Python\Python38\lib\imaplib.py", line 198, in __init__
    self.open(host, port)
  File "C:\Users\yehya\AppData\Local\Programs\Python\Python38\lib\imaplib.py", line 1310, in open
    IMAP4.open(self, host, port)
  File "C:\Users\yehya\AppData\Local\Programs\Python\Python38\lib\imaplib.py", line 303, in open
    self.sock = self._create_socket()
  File "C:\Users\yehya\AppData\Local\Programs\Python\Python38\lib\imaplib.py", line 1300, in _create_socket
    sock = IMAP4._create_socket(self)
  File "C:\Users\yehya\AppData\Local\Programs\Python\Python38\lib\imaplib.py", line 293, in _create_socket
    return socket.create_connection((host, self.port))
  File "C:\Users\yehya\AppData\Local\Programs\Python\Python38\lib\socket.py", line 787, in create_connection
    for res in getaddrinfo(host, port, 0, SOCK_STREAM):
  File "C:\Users\yehya\AppData\Local\Programs\Python\Python38\lib\socket.py", line 918, in getaddrinfo
    for res in _socket.getaddrinfo(host, port, family, type, proto, flags):
socket.gaierror: [Errno 11001] getaddrinfo failed

谢谢你的帮助

Answer 1

马克斯的评论是正确的。正确的格式是mail=imaplib.IMAP4_SSL（服务器，143）。在我的例子中，服务器也不需要ssl方法。So mail=imaplib.IMAP4（服务器，143）

Answer 2

问题在于IP地址0.0.0.0。这是一个“侦听”地址，而不是localhost地址。请参见the wikipedia entry

如果要循环回同一台机器，需要使用IP地址127.0.0.1。对应的wikipedia article

我还认为服务器地址中的/可能不正确。我认为您需要用:替换它来指定端口

更改行：

SERVER = '0.0.0.0/143'#'smtp-mail.outlook.com'

以下一项：

SERVER = '127.0.0.1:143'#'smtp-mail.outlook.com'