IMAP protocol error communicating with outlook.com

[mir07]

Hi Hoa,

I recently see this when making IMAP communication with outlook.com:
(bug on claws-mail bugzilla: https://www.thewildbeast.co.uk/claws-mail/bugzilla/show_bug.cgi?id=4731)

** Message: 21:41:41.531: IMAP connection is un-authenticated

passwordstore.c:204:Getting password 'oauth2_access_expiry' from block (1/23)
password.c:597:Trying to decrypt password...
password.c:100:TIMING _make_key_deriv PBKDF2: 0s088ms
password.c:491:Encrypted password string length: 144
** Message: 21:41:41.619: OAuth2 access token still fresh

passwordstore.c:204:Getting password 'recv' from block (1/23)
password.c:597:Trying to decrypt password...
password.c:100:TIMING _make_key_deriv PBKDF2: 0s072ms
password.c:491:Encrypted password string length: 1168
imap-thread.c:459:found imap 0x7fded80160a0
imap-thread.c:459:found imap 0x7fded80160a0
[2024-01-08 21:41:41] IMAP> 1 CAPABILITY
[2024-01-08 21:41:41] IMAP< * CAPABILITY IMAP4 IMAP4rev1 AUTH=PLAIN AUTH=XOAUTH2 SASL-IR UIDPLUS ID UNSELECT CHILDREN IDLE NAMESPACE LITERAL+
[2024-01-08 21:41:41] IMAP< 1 OK CAPABILITY completed.
imap-thread.c:475:generic_cb
imap-thread.c:459:found imap 0x7fded80160a0
imap-thread.c:759:capa 0
imap.c:872:got capa IMAP4
imap.c:872:got capa IMAP4rev1
imap.c:872:got capa PLAIN
imap.c:872:got capa XOAUTH2
imap.c:872:got capa SASL-IR
imap.c:872:got capa UIDPLUS
imap.c:872:got capa ID
imap.c:872:got capa UNSELECT
imap.c:872:got capa CHILDREN
imap.c:872:got capa IDLE
imap.c:872:got capa NAMESPACE
imap.c:872:got capa LITERAL+
[2024-01-08 21:41:41] IMAP> Logging XXXXX@outlook.com to outlook.office365.com using XOAUTH2

imap-thread.c:1030:imap login - begin
imap-thread.c:459:found imap 0x2362ce0
imap-thread.c:459:found imap 0x2362ce0
[2024-01-08 21:39:56] IMAP< AUTHENTICATE completed.
imap-thread.c:1020:imap login run - end 0
imap-thread.c:475:generic_cb
imap-thread.c:459:found imap 0x2362ce0
imap-thread.c:1046:imap login - end
[2024-01-08 21:39:56] IMAP< Login to outlook.office365.com successful
imap.c:535:locking session 0x23b10b0 (0)
imap.c:4774:get_num_list: updating num list
imap-thread.c:867:imap list - begin
imap-thread.c:459:found imap 0x2362ce0
imap-thread.c:459:found imap 0x2362ce0
[2024-01-08 21:39:56] IMAP> 3 LIST "" ""
[2024-01-08 21:39:56] IMAP< 3 BAD User is authenticated but not connected.
imap-thread.c:857:imap list run - end
imap-thread.c:475:generic_cb
imap-thread.c:459:found imap 0x2362ce0
imap-thread.c:878:imap list - end (nil)

** (claws-mail:264775): WARNING **: 21:39:56.401: [2024-01-08 21:39:56] IMAP error on outlook.office365.com: protocol error (very probably non-RFC compliance from the server)

** (claws-mail:264775): WARNING **: 21:39:56.401: [2024-01-08 21:39:56] IMAP connection broken

** (claws-mail:264775): WARNING **: 21:39:56.401: [2024-01-08 21:39:56] LIST failed

imap-thread.c:867:imap list - begin
imap-thread.c:459:found imap 0x2362ce0
imap-thread.c:459:found imap 0x2362ce0
[2024-01-08 21:39:56] IMAP> 4 LIST "" "INBOX"
[2024-01-08 21:39:56] IMAP< 4 BAD User is authenticated but not connected.
[2024-01-08 21:39:56] IMAP< * BYE Connection closed. 14
imap-thread.c:857:imap list run - end
imap-thread.c:475:generic_cb
imap-thread.c:459:found imap 0x2362ce0
imap-thread.c:878:imap list - end (nil)

** (claws-mail:264775): WARNING **: 21:39:56.431: [2024-01-08 21:39:56] IMAP error on outlook.office365.com: protocol error (very probably non-RFC compliance from the server)

** (claws-mail:264775): WARNING **: 21:39:56.431: [2024-01-08 21:39:56] IMAP connection broken

** (claws-mail:264775): WARNING **: 21:39:56.431: [2024-01-08 21:39:56] LIST failed