python＆smtplib：是否可以使用oauth2通过gmail发送邮件？

So I can login to and send mail through gmail using smtplib (using the script below), but I was just wondering if using oauth2 was an option like with imaplib? I didn't see anything on the smtplib documentation page about oauth and I haven't found anything googling. Thanks.

所以我可以使用smtplib登录并通过gmail发送邮件(使用下面的脚本),但我只是想知道是否使用oauth2是一个像imaplib一样的选项?我没有在smtplib文档页面上看到关于oauth的任何内容,我没有发现任何谷歌搜索。谢谢。

#! /usr/bin/python

import smtplib

to = 'myemailaddress'
gmail_user = 'myemailaddress'
gmail_pwd = 'passwd'
smtpserver = smtplib.SMTP("smtp.gmail.com",587)
smtpserver.ehlo()
smtpserver.starttls()
smtpserver.ehlo
smtpserver.login(gmail_user, gmail_pwd)
header = 'To:' + to + '\n' + 'From: ' + gmail_user + '\n' + 'Subject:testing \n'
print header
msg = header + '\n this is test msg from me \n\n'
smtpserver.sendmail(gmail_user, to, msg)
print 'done!'
smtpserver.close();

Edit:

Thanks to samy.vilar for the very detailed explaination provided in his answer. However, I'm having a little trouble. Here is my script:

感谢samy.vilar在他的回答中提供了非常详细的解释。但是,我有点麻烦。这是我的脚本:

#! /usr/bin/python

import oauth2 as oauth
import oauth2.clients.smtp as smtplib

consumer = oauth.Consumer('anonymous', 'anonymous')
token = oauth.Token('1/MI6B2DqJP4FEkDRLUKrD5l46sQ0758-2ucEKBY-DeB0', 'NysqNqVTulFsdHpSRrPP56sF')

url = "https://mail.google.com/mail/b/[e-mail]/smtp/"

conn = smtplib.SMTP('smtp.googlemail.com', 587)
conn.set_debuglevel(True)
conn.ehlo('test')
conn.starttls()

conn.authenticate(url, consumer, token)

header = 'To:[e-mail]\n' + 'From: [e-mail]\n' + 'Subject:testing \n'
msg = header + '\n this is test msg from me \n\n'
conn.sendmail('[e-mail]', '[e-mail]', msg)

What is puzzling me, is that it appears to authenticate ok:

让我感到困惑的是,它似乎证明了确定:

send: 'ehlo test\r\n'
reply: '250-mx.google.com at your service, [75.173.8.127]\r\n'
reply: '250-SIZE 35882577\r\n'
reply: '250-8BITMIME\r\n'
reply: '250-STARTTLS\r\n'
reply: '250 ENHANCEDSTATUSCODES\r\n'
reply: retcode (250); Msg: mx.google.com at your service, [75.173.8.127]
SIZE 35882577
8BITMIME
STARTTLS
ENHANCEDSTATUSCODES
send: 'STARTTLS\r\n'
reply: '220 2.0.0 Ready to start TLS\r\n'
reply: retcode (220); Msg: 2.0.0 Ready to start TLS
send: 'AUTH XOAUTH R0VUIGh0dHBzOi8vbWFpbC5nb29nbGUuY29tL21haWwvYi90ZXN0aW5nLm9hdXRoLjFAZ21haWwuY29tL3NtdHAvIG9hdXRoX2JvZHlfaGFzaD0iMmptajdsNXJTdzB5VmIlMkZ2bFdBWWtLJTJGWUJ3ayUzRCIsb2F1dGhfY29uc3VtZXJfa2V5PSJhbm9ueW1vdXMiLG9hdXRoX25vbmNlPSI3Nzc0ODMyIixvYXV0aF9zaWduYXR1cmU9IkxuckZHODdxdHRxZUhsUlQ1emRndmtEZ1UzTSUzRCIsb2F1dGhfc2lnbmF0dXJlX21ldGhvZD0iSE1BQy1TSEExIixvYXV0aF90aW1lc3RhbXA9IjEzNDIxNDI3NzIiLG9hdXRoX3Rva2VuPSIxJTJGTUk2QjJEcUpQNEZFa0RSTFVLckQ1bDQ2c1EwNzU4LTJ1Y0VLQlktRGVCMCIsb2F1dGhfdmVyc2lvbj0iMS4wIg==\r\n'
reply: '235 2.7.0 Accepted\r\n'
reply: retcode (235); Msg: 2.7.0 Accepted

But then when it comes to sending the email, it seems to forget that conn was already authenticated:

但是当发送电子邮件时,似乎忘记了conn已经过身份验证:

send: 'ehlo [192.168.2.4]\r\n'
reply: '250-mx.google.com at your service, [75.173.8.127]\r\n'
reply: '250-SIZE 35882577\r\n'
reply: '250-8BITMIME\r\n'
reply: '250-AUTH LOGIN PLAIN XOAUTH\r\n'
reply: '250 ENHANCEDSTATUSCODES\r\n'
reply: retcode (250); Msg: mx.google.com at your service, [75.173.8.127]
SIZE 35882577
8BITMIME
AUTH LOGIN PLAIN XOAUTH
ENHANCEDSTATUSCODES
send: 'mail FROM:<[e-mail]> size=107\r\n'
reply: '530-5.5.1 Authentication Required. Learn more at\r\n'
reply: '530 5.5.1 http://support.google.com/mail/bin/answer.py?answer=14257 tu7sm3163839pbc.55\r\n'
reply: retcode (530); Msg: 5.5.1 Authentication Required. Learn more at
5.5.1 http://support.google.com/mail/bin/answer.py?answer=14257 tu7sm3163839pbc.55
send: 'rset\r\n'
reply: '250 2.1.5 Flushed tu7sm3163839pbc.55\r\n'
reply: retcode (250); Msg: 2.1.5 Flushed tu7sm3163839pbc.55
Traceback (most recent call last):
  File "./gmail_send3.py", line 47, in <module>
    conn.sendmail('[e-mail]', '[e-mail]', msg)
  File "/usr/lib/python2.7/smtplib.py", line 713, in sendmail
    raise SMTPSenderRefused(code, resp, from_addr)
smtplib.SMTPSenderRefused: (530, '5.5.1 Authentication Required. Learn more at\n5.5.1 http://support.google.com/mail/bin/answer.py?answer=14257 tu7sm3163839pbc.55', '[e-mail]')

1 个解决方案

#1

Interesting, I think it is possible, I found the following links
https://developers.google.com/google-apps/gmail/oauth_overview

有意思,我认为有可能,我发现以下链接https://developers.google.com/google-apps/gmail/oauth_overview

UPDATE
https://github.com/google/gmail-oauth2-tools/wiki/OAuth2DotPyRunThrough
This is the new walk through using oauth2, it seems like xoauth has being declared obsolete, I've update the URL to get the older version xoauth.py file, in case any one still needs it, though it looks like Google has changed their API and this walkthrough is no longer applicable.

更新https://github.com/google/gmail-oauth2-tools/wiki/OAuth2DotPyRunThrough这是使用oauth2的新步骤,看起来xoauth已被宣布为过时,我更新了URL以获取旧版xoauth .py文件,如果任何人仍然需要它,虽然看起来谷歌已经改变了他们的API,这个演练不再适用。

you can use xoauth directly or https://github.com/simplegeo/python-oauth2/ to actually communicate I recommend the latter, its more versatile.

您可以直接使用xoauth或https://github.com/simplegeo/python-oauth2/实际沟通我推荐后者,它更通用。

Apparently you first need to download xoauth.py script.

显然你首先需要下载xoauth.py脚本。

$ wget https://raw.githubusercontent.com/google/gmail-oauth2-tools/master/obsolete/python/xoauth.py
$ python xoauth.py --generate_oauth_token --user=[e-mail]

xoauth.py:74: DeprecationWarning: the sha module is deprecated; use the hashlib module instead
import sha
oauth_token_secret: HFJEvjcTfiXSPxgLzDh-1yaH
oauth_token: 4/EwUxCtY9ye1kdtb4uNJIcaUe9KXl
oauth_callback_confirmed: true
To authorize token, visit this url and follow the directions to generate a verification code:
https://www.google.com/accounts/OAuthAuthorizeToken?oauth_token=4%2FEwUxCtY9ye1kdtb4uNJIcaUe9KXl
Enter verification code: 7XjT15fqk1aNe8152d9oTRcJ
oauth_token: 1/MI6B2DqJP4FEkDRLUKrD5l46sQ0758-2ucEKBY-DeB0
oauth_token_secret: NysqNqVTulFsdHpSRrPP56sF

lets test it:

让我们测试一下:

$ python xoauth.py --test_imap_authentication --user=[e-mail] \
 --oauth_token=1/MI6B2DqJP4FEkDRLUKrD5l46sQ0758-2ucEKBY-DeB0 --oauth_token_secret=NysqNqVTulFsdHpSRrPP56sF

xoauth.py:74: DeprecationWarning: the sha module is deprecated; use the hashlib module instead
xoauth string (before base64-encoding):
GET https://mail.google.com/mail/b/[e-mail]/imap/ oauth_consumer_key="anonymous",oauth_nonce="18010070659685102619",oauth_signature="jTJv%2FAFATpzfq%2BZTLAAxFNmWPi0%3D",oauth_signature_method="HMAC-SHA1",oauth_timestamp="1342084141",oauth_token="1%2FMI6B2DqJP4FEkDRLUKrD5l46sQ0758-2ucEKBY-DeB0",oauth_version="1.0"

XOAUTH string (base64-encoded): R0VUIGh0dHBzOi8vbWFpbC5nb29nbGUuY29tL21haWwvYi90ZXN0aW5nLm9hdXRoLjFAZ21haWwuY29tL2ltYXAvIG9hdXRoX2NvbnN1bWVyX2tleT0iYW5vbnltb3VzIixvYXV0aF9ub25jZT0iMTgwMTAwNzA2NTk2ODUxMDI2MTkiLG9hdXRoX3NpZ25hdHVyZT0ialRKdiUyRkFGQVRwemZxJTJCWlRMQUF4Rk5tV1BpMCUzRCIsb2F1dGhfc2lnbmF0dXJlX21ldGhvZD0iSE1BQy1TSEExIixvYXV0aF90aW1lc3RhbXA9IjEzNDIwODQxNDEiLG9hdXRoX3Rva2VuPSIxJTJGTUk2QjJEcUpQNEZFa0RSTFVLckQ1bDQ2c1EwNzU4LTJ1Y0VLQlktRGVCMCIsb2F1dGhfdmVyc2lvbj0iMS4wIg==

09:01.40 > COKI1 AUTHENTICATE XOAUTH
09:01.44 < + 
09:01.45 write literal size 444
09:02.68 < * CAPABILITY IMAP4rev1 UNSELECT IDLE NAMESPACE QUOTA ID XLIST CHILDREN X-GM-EXT-1 UIDPLUS COMPRESS=DEFLATE
09:02.68 < COKI1 OK [e-mail] Testing Oauth authenticated (Success)
09:02.68 > COKI2 SELECT INBOX
09:03.09 < * FLAGS (\Answered \Flagged \Draft \Deleted \Seen)
09:03.09 < * OK [PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen \*)] Flags permitted.
09:03.09 < * OK [UIDVALIDITY 3] UIDs valid.
09:03.09 < * 3 EXISTS
09:03.09 < * 0 RECENT
09:03.09 < * OK [UIDNEXT 4] Predicted next UID.
09:03.09 < COKI2 OK [READ-WRITE] INBOX selected. (Success)

looks like we are good to go. you may want to set up a virtualenv

看起来我们很高兴。你可能想建立一个virtualenv

$ git clone https://github.com/simplegeo/python-oauth2.git
$ cd python-oauth2/
$ sudo python setup.py install

and taken right from the docs:

并直接从文档:

import oauth2 as oauth
import oauth2.clients.imap as imaplib

# Set up your Consumer and Token as per usual. Just like any other
# three-legged OAuth request.
consumer = oauth.Consumer('anonymous', 'anonymous')
token = oauth.Token('1/MI6B2DqJP4FEkDRLUKrD5l46sQ0758-2ucEKBY-DeB0', 'NysqNqVTulFsdHpSRrPP56sF')

# Setup the URL according to Google's XOAUTH implementation. Be sure
# to replace the email here with the appropriate email address that
# you wish to access.
url = "https://mail.google.com/mail/b/[e-mail]/imap/"

conn = imaplib.IMAP4_SSL('imap.googlemail.com')
conn.debug = 4 

# This is the only thing in the API for impaplib.IMAP4_SSL that has 
# changed. You now authenticate with the URL, consumer, and token.
conn.authenticate(url, consumer, token)

# Once authenticated everything from the impalib.IMAP4_SSL class will 
# work as per usual without any modification to your code.
conn.select('INBOX')
print conn.list()


>>> conn.authenticate(url, consumer, token)
20:11.73 > EPKK1 AUTHENTICATE XOAUTH
20:11.78 < + 
20:11.78 write literal size 496
20:11.93 < * CAPABILITY IMAP4rev1 UNSELECT IDLE NAMESPACE QUOTA ID XLIST CHILDREN X-GM-EXT-1 UIDPLUS COMPRESS=DEFLATE
20:11.93 < EPKK1 OK [e-mail] Testing Oauth authenticated (Success)
>>> conn.select('INBOX')
20:17.47 > EPKK2 SELECT INBOX
20:17.58 < * FLAGS (\Answered \Flagged \Draft \Deleted \Seen)
20:17.58 < * OK [PERMANENTFLAGS (\Answered \Flagged \Draft \Deleted \Seen \*)] Flags permitted.
20:17.58 < * OK [UIDVALIDITY 3] UIDs valid.
20:17.58 < * 3 EXISTS
20:17.58 < * 0 RECENT
20:17.58 < * OK [UIDNEXT 4] Predicted next UID.
20:17.58 < EPKK2 OK [READ-WRITE] INBOX selected. (Success)
('OK', ['3'])
>>> print conn.list()
20:20.23 > EPKK3 LIST "" *
20:20.28 < * LIST (\HasNoChildren) "/" "INBOX"
20:20.28 < * LIST (\Noselect \HasChildren) "/" "[Gmail]"
20:20.28 < * LIST (\HasNoChildren) "/" "[Gmail]/All Mail"
20:20.28 < * LIST (\HasNoChildren) "/" "[Gmail]/Drafts"
20:20.28 < * LIST (\HasNoChildren) "/" "[Gmail]/Important"
20:20.28 < * LIST (\HasNoChildren) "/" "[Gmail]/Sent Mail"
20:20.28 < * LIST (\HasNoChildren) "/" "[Gmail]/Spam"
20:20.28 < * LIST (\HasNoChildren) "/" "[Gmail]/Starred"
20:20.28 < * LIST (\HasNoChildren) "/" "[Gmail]/Trash"
20:20.28 < EPKK3 OK Success
('OK', ['(\\HasNoChildren) "/" "INBOX"', '(\\Noselect \\HasChildren) "/" "[Gmail]"', '(\\HasNoChildren) "/" "[Gmail]/All Mail"', '(\\HasNoChildren) "/" "[Gmail]/Drafts"', '(\\HasNoChildren) "/" "[Gmail]/Important"', '(\\HasNoChildren) "/" "[Gmail]/Sent Mail"', '(\\HasNoChildren) "/" "[Gmail]/Spam"', '(\\HasNoChildren) "/" "[Gmail]/Starred"', '(\\HasNoChildren) "/" "[Gmail]/Trash"'])
>>> 

for smtp:

import oauth2 as oauth
import oauth2.clients.smtp as smtplib

# Set up your Consumer and Token as per usual. Just like any other
# three-legged OAuth request.
# Set up your Consumer and Token as per usual. Just like any other
# three-legged OAuth request.
consumer = oauth.Consumer('anonymous', 'anonymous')
token = oauth.Token('1/MI6B2DqJP4FEkDRLUKrD5l46sQ0758-2ucEKBY-DeB0', 'NysqNqVTulFsdHpSRrPP56sF')

# Setup the URL according to Google's XOAUTH implementation. Be sure
# to replace the email here with the appropriate email address that
# you wish to access.
url = "https://mail.google.com/mail/b/[e-mail]/smtp/"

conn = smtplib.SMTP('smtp.googlemail.com', 587)
conn.set_debuglevel(True)
conn.ehlo('test')
conn.starttls()

# Again the only thing modified from smtplib.SMTP is the authenticate
# method, which works identically to the imaplib.IMAP4_SSL method.
conn.authenticate(url, consumer, token)



>>> conn.ehlo('test')
send: 'ehlo test\r\n'
reply: '250-mx.google.com at your service, [142.255.57.49]\r\n'
reply: '250-SIZE 35882577\r\n'
reply: '250-8BITMIME\r\n'
reply: '250-STARTTLS\r\n'
reply: '250 ENHANCEDSTATUSCODES\r\n'
reply: retcode (250); Msg: mx.google.com at your service, [142.255.57.49]
SIZE 35882577
8BITMIME
STARTTLS
ENHANCEDSTATUSCODES
(250, 'mx.google.com at your service, [142.255.57.49]\nSIZE 35882577\n8BITMIME\nSTARTTLS\nENHANCEDSTATUSCODES')
>>> conn.starttls()
send: 'STARTTLS\r\n'
reply: '220 2.0.0 Ready to start TLS\r\n'
reply: retcode (220); Msg: 2.0.0 Ready to start TLS
(220, '2.0.0 Ready to start TLS')
>>> conn.authenticate(url, consumer, token)
send: 'AUTH XOAUTH R0VUIGh0dHBzOi8vbWFpbC5nb29nbGUuY29tL21haWwvYi90ZXN0aW5nLm9hdXRoLjFAZ21haWwuY29tL3NtdHAvIG9hdXRoX2JvZHlfaGFzaD0iMmptajdsNXJTdzB5VmIlMkZ2bFdBWWtLJTJGWUJ3ayUzRCIsb2F1dGhfY29uc3VtZXJfa2V5PSJhbm9ueW1vdXMiLG9hdXRoX25vbmNlPSI4MTEyMDkxNCIsb2F1dGhfc2lnbmF0dXJlPSJSaUFsTGdQWnpBSkNQJTJGWmx5aGRpYU1CV0xiTSUzRCIsb2F1dGhfc2lnbmF0dXJlX21ldGhvZD0iSE1BQy1TSEExIixvYXV0aF90aW1lc3RhbXA9IjEzNDIwODU2NzIiLG9hdXRoX3Rva2VuPSIxJTJGTUk2QjJEcUpQNEZFa0RSTFVLckQ1bDQ2c1EwNzU4LTJ1Y0VLQlktRGVCMCIsb2F1dGhfdmVyc2lvbj0iMS4wIg==\r\n'
reply: '235 2.7.0 Accepted\r\n'
reply: retcode (235); Msg: 2.7.0 Accepted
>>>

and to send emails:

并发送电子邮件:

>>> conn.authenticate(url, consumer, token)
send: 'AUTH XOAUTH R0VUIGh0dHBzOi8vbWFpbC5nb29nbGUuY29tL21haWwvYi90ZXN0aW5nLm9hdXRoLjFAZ21haWwuY29tL3NtdHAvIG9hdXRoX2JvZHlfaGFzaD0iMmptajdsNXJTdzB5VmIlMkZ2bFdBWWtLJTJGWUJ3ayUzRCIsb2F1dGhfY29uc3VtZXJfa2V5PSJhbm9ueW1vdXMiLG9hdXRoX25vbmNlPSI2OTg3ODM3NiIsb2F1dGhfc2lnbmF0dXJlPSIlMkZjUGslMkJRVWVJY1RaYXp1ekkwR1FzdkdtbDFBJTNEIixvYXV0aF9zaWduYXR1cmVfbWV0aG9kPSJITUFDLVNIQTEiLG9hdXRoX3RpbWVzdGFtcD0iMTM0MjA4NjAxNCIsb2F1dGhfdG9rZW49IjElMkZNSTZCMkRxSlA0RkVrRFJMVUtyRDVsNDZzUTA3NTgtMnVjRUtCWS1EZUIwIixvYXV0aF92ZXJzaW9uPSIxLjAi\r\n'
reply: '235 2.7.0 Accepted\r\n'
reply: retcode (235); Msg: 2.7.0 Accepted
>>> header = 'To:[e-mail]\n' + 'From: [e-mail]\n' + 'Subject:testing \n'
>>> msg = header + '\n this is test msg from me \n\n'
>>> conn.sendmail('[e-mail]', '[e-mail]', msg)
send: 'mail FROM:<[e-mail]> size=107\r\n'
reply: '250 2.1.0 OK gb7sm6540492qab.12\r\n'
reply: retcode (250); Msg: 2.1.0 OK gb7sm6540492qab.12
send: 'rcpt TO:<[e-mail]>\r\n'
reply: '250 2.1.5 OK gb7sm6540492qab.12\r\n'
reply: retcode (250); Msg: 2.1.5 OK gb7sm6540492qab.12
send: 'data\r\n'
reply: '354  Go ahead gb7sm6540492qab.12\r\n'
reply: retcode (354); Msg: Go ahead gb7sm6540492qab.12
data: (354, 'Go ahead gb7sm6540492qab.12')
send: 'To:[e-mail]\r\nFrom: [e-mail]\r\nSubject:testing \r\n\r\n this is test msg from me \r\n\r\n.\r\n'
reply: '250 2.0.0 OK 1342086030 gb7sm6540492qab.12\r\n'
reply: retcode (250); Msg: 2.0.0 OK 1342086030 gb7sm6540492qab.12
data: (250, '2.0.0 OK 1342086030 gb7sm6540492qab.12')
{}
>>>

make sure you authenticate before sending out emails.
hope this helps ...

确保在发送电子邮件之前进行身份验证。希望这可以帮助 ...

UPDATE
There may be a bug that requires re-authentication, the following should work.

更新可能存在需要重新验证的错误,以下情况应该有效。

import oauth2 as oauth
import oauth2.clients.smtp as smtplib

consumer = oauth.Consumer('anonymous', 'anonymous')
token = oauth.Token('1/MI6B2DqJP4FEkDRLUKrD5l46sQ0758-2ucEKBY-DeB0', 'NysqNqVTulFsdHpSRrPP56sF')

url = "https://mail.google.com/mail/b/[e-mail]/smtp/"

conn = smtplib.SMTP('smtp.googlemail.com', 587)
conn.set_debuglevel(True)
conn.ehlo('test')
conn.starttls()

conn.authenticate(url, consumer, token)

header = 'To:[e-mail]\n' + 'From: [e-mail]\n' + 'Subject:testing \n'
msg = header + '\n this is test msg from me \n\n'
try:
    conn.sendmail('[e-mail]', '[e-mail]', msg)
except Exception as ex:
    print str(ex)
    print 'retying ...'
    conn.authenticate(url, consumer, token)
    conn.sendmail('[e-mail]', '[e-mail]', msg)

though you can also use xoauth directly as such:

虽然你也可以直接使用xoauth:

import time
import smtplib
import xoauth

consumer = xoauth.OAuthEntity('anonymous', 'anonymous')
access_token = xoauth.OAuthEntity('1/MI6B2DqJP4FEkDRLUKrD5l46sQ0758-2ucEKBY-DeB0', 'NysqNqVTulFsdHpSRrPP56sF')

xoauth_string = xoauth.GenerateXOauthString(consumer, access_token, '[e-mail]', 'smtp', '[e-mail]', str(xoauth.random.randrange(2**64 - 1)), str(int(time.time())))

smtp_conn = smtplib.SMTP('smtp.gmail.com', 587)
smtp_conn.set_debuglevel(True)
smtp_conn.ehlo()
smtp_conn.starttls()
smtp_conn.ehlo()
smtp_conn.docmd('AUTH', 'XOAUTH ' + xoauth.base64.b64encode(xoauth_string))

header = 'To:[e-mail]\n' + 'From: [e-mail]\n' + 'Subject:testing \n'
msg = header + '\n this is test msg from me \n\n'
smtp_conn.sendmail('[e-mail]', '[e-mail]', msg)

this seems to always work, I should submit a ticket to python-oauth2 team, thank you.

这似乎总能奏效,我应该向python-oauth2团队提交一张票,谢谢。

THOUGH THIS ALSO SEEM TO ALWAYS WORK

这也似乎总是工作

import oauth2 as oauth
import oauth2.clients.smtp as smtplib

consumer = oauth.Consumer('anonymous', 'anonymous')
token = oauth.Token('1/MI6B2DqJP4FEkDRLUKrD5l46sQ0758-2ucEKBY-DeB0', 'NysqNqVTulFsdHpSRrPP56sF')

url = "https://mail.google.com/mail/b/[e-mail]/smtp/"

conn = smtplib.SMTP('smtp.googlemail.com', 587)
conn.set_debuglevel(True)
conn.ehlo('test')
conn.starttls()
conn.ehlo()
conn.authenticate(url, consumer, token)
header = 'To:[e-mail]\n' + 'From: [e-mail]\n' + 'Subject:testing \n'
msg = header + '\n this is test msg from me \n\n'
conn.sendmail('[e-mail]', '[e-mail]', msg)

it looks you need to call conn.ehlo() before authenticating.

看起来你需要在进行身份验证之前调用conn.ehlo()。