New submission from junpengruan <[email protected]>:
Hi
I think there is a bug when initial_response_ok=False and using AUTH PLAIN, the
server will response like:
------------------
C: AUTH PLAIN
S: 334 ok. go on
------------------
and it's not base64 encoding, while in the auth() it will base64 decode the
resp(here is "ok, go on") which will cause a binascii.Error:
Traceback (most recent call last):
File "/usr/lib/python3.6/smtplib.py", line 644, in auth
challenge = base64.decodebytes(resp)
File "/usr/lib/python3.6/base64.py", line 553, in decodebytes
return binascii.a2b_base64(s)
binascii.Error: Incorrect padding
I am using Magic Winmail Server2.4(build 0530) as a SMTP server, which appears
dont support initial_response, so I set initial_response_ok=False and got this
Error.
currently I catch this error and ignore it to evade program failed, it works
fine. Is there better way to fix this problem?
Thanks!
----------
components: email
messages: 392039
nosy: barry, junpengruan, r.david.murray
priority: normal
severity: normal
status: open
title: binascii.Error raised in smtplib when initial_response_ok=False
type: behavior
versions: Python 3.6, Python 3.7, Python 3.8, Python 3.9
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<https://bugs.python.org/issue43949>
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