请教关于SMTP对象的login问题

CODE:

import smtplib
s=smtplib.SMTP()
s.connect('**')
s=login('*','*')

CODE:

>>> import smtplib
>>> s = smtplib.SMTP()
>>> s.set_debuglevel(1)
>>> s.connect('smtp.263.net')
connect: ('smtp.263.net', 25)
connect: ('smtp.263.net', 25)
reply: '220 Welcome to coremail System(With Anti-Spam) 2.1 for 263(040326)\r\n'
reply: retcode (220); Msg: Welcome to coremail System(With Anti-Spam) 2.1 for 263(040326)
connect: Welcome to coremail System(With Anti-Spam) 2.1 for 263(040326)
(220, 'Welcome to coremail System(With Anti-Spam) 2.1 for 263(040326)')
>>> s.login('hust_zxq524','*****')
send: 'ehlo pc11\r\n'
reply: '250-smtp.263.net\r\n'
reply: '250-PIPELINING\r\n'
reply: '250-SIZE 30720000\r\n'
reply: '250-ETRN\r\n'
reply: '250-AUTH LOGIN\r\n'
reply: '250-AUTH=LOGIN\r\n'
reply: '250-XVERP\r\n'
reply: '250 8BITMIME\r\n'
reply: retcode (250); Msg: smtp.263.net
PIPELINING
SIZE 30720000
ETRN
AUTH LOGIN
AUTH=LOGIN
XVERP
8BITMIME
AuthMethod: None
Traceback (most recent call last):
  File "<interactive input>", line 1, in ?
  File "D:\tools\Python22\lib\smtplib.py", line 540, in login
    raise SMTPException("No suitable authentication method found.")
SMTPException: No suitable authentication method found.

QUOTE:

原帖由 wolfg 于 2006-9-30 17:02 发表
可以考虑实现自己的login方法

QUOTE:

AUTH_PLAIN = "PLAIN"
        AUTH_CRAM_MD5 = "CRAM-MD5"
        AUTH_LOGIN = "LOGIN"

        if self.helo_resp is None and self.ehlo_resp is None:
            if not (200 <= self.ehlo()[0] <= 299):
                (code, resp) = self.helo()
                if not (200 <= code <= 299):
                    raise SMTPHeloError(code, resp)

        if not self.has_extn("auth"):
            raise SMTPException("SMTP AUTH extension not supported by server.")

        # Authentication methods the server supports:
        authlist = self.esmtp_features["auth"].split()

        # List of authentication methods we support: from preferred to
        # less preferred methods. Except for the purpose of testing the weaker
        # ones, we prefer stronger methods like CRAM-MD5:
        #preferred_auths = [AUTH_CRAM_MD5, AUTH_PLAIN]
        preferred_auths = [AUTH_CRAM_MD5, AUTH_PLAIN, AUTH_LOGIN]# add LOGIN
        #preferred_auths = [AUTH_PLAIN, AUTH_CRAM_MD5]

        # Determine the authentication method we'll use
        authmethod = None
        for method in preferred_auths:
            if method in authlist:
                authmethod = method
                break
            if '='+method in authlist:
                    authmethod = method
                    break # 本来这个部分不用加，但是我那个邮件服务器返回的是 auth=LOGIN，多了一个'='，所以我就加了这一段
        if self.debuglevel > 0:
            print "AuthMethod:", authmethod
        if authmethod == AUTH_CRAM_MD5:
            (code, resp) = self.docmd("AUTH", AUTH_CRAM_MD5)
            if code == 503:
                # 503 == 'Error: already authenticated'
                return (code, resp)
            (code, resp) = self.docmd(encode_cram_md5(resp, user, password))
        elif authmethod == AUTH_PLAIN:
            (code, resp) = self.docmd("AUTH",
                AUTH_PLAIN + " " + encode_plain(user, password))
      
# 主要就是下面这一段了         
       elif authmethod == AUTH_LOGIN:
            (code, resp) = self.docmd("AUTH", AUTH_LOGIN)
            if code == 334:
                (code, resp) = self.docmd(base64.encodestring(user)[:-1])
                if code == 334:
                    (code, resp) = self.docmd(base64.encodestring(password)[:-1])      
       elif authmethod == None:
            raise SMTPException("No suitable authentication method found.")
        if code not in [235, 503]:
            # 235 == 'Authentication successful'
            # 503 == 'Error: already authenticated'
            raise SMTPAuthenticationError(code, resp)
        return (code, resp)