AUTH Command POP Protocol Exchange

[7i77an]

Hi Vincent,

When configuring an office365 account with pop3 protocol and oauth authentication I have this error:

[INFO ] 9/2-16:48:55.590965 03490 CAccount::CheckNewMail: Checking mail for account XXXXXXX
[PROFI] 9/2-16:48:55.599780 03490 EMailProxy [pop3s:34] Send C:Connecting to outlook.office365.com, port 995
[PROFI] 9/2-16:48:55.713555 03490 EMailProxy [pop3s:34] Send C:Beginning SSL/TLS handshake
[PROFI] 9/2-16:48:55.926427 03490 EMailProxy [pop3s:34] Send C:Getting peer certificates
[PROFI] 9/2-16:48:55.957181 03490 EMailProxy [pop3s:34] Receive C:+OK The Microsoft Exchange POP3 service is ready. [UwBDADEAUABSADgAMABDAEEAMAAxADAANQAuAGwAYQBtAHAAcgBkADgAMAAuAHAAcgBvAGQALgBvAHUAdABsAG8AbwBrAC4AYwBvAG0A]
[PROFI] 9/2-16:48:55.957585 03490 EMailProxy [pop3s:34] Send C:CAPA
[PROFI] 9/2-16:48:56.053575 03490 EMailProxy [pop3s:34] Receive C:+OK
[PROFI] 9/2-16:48:56.053593 03490 EMailProxy [pop3s:34] Receive C:TOP
[PROFI] 9/2-16:48:56.053598 03490 EMailProxy [pop3s:34] Receive C:UIDL
[PROFI] 9/2-16:48:56.053603 03490 EMailProxy [pop3s:34] Receive C:SASL PLAIN XOAUTH2
[PROFI] 9/2-16:48:56.053608 03490 EMailProxy [pop3s:34] Receive C:USER
[PROFI] 9/2-16:48:56.053611 03490 EMailProxy [pop3s:34] Receive C:.
[PROFI] 9/2-16:48:56.054182 03490 EMailProxy [pop3s:34] Send C:AUTH XOAUTH2 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........
[PROFI] 9/2-16:48:56.151444 03490 EMailProxy [pop3s:34] Receive C:-ERR Protocol error. Connection is closed. 10
[PROFI] 9/2-16:48:56.151768 03490 EMailProxy [pop3s:34] Send C:USER {username}
[PROFI] 9/2-16:48:56.152013 03490 EMailProxy [pop3s:34] Send C:Disconnecting
[ERROR] 9/2-16:48:56.153058 03490 CAccount::CheckNewMail: URL 'pop3s://outlook.office365.com', account 'XXXXX', vmime::exception: * vmime::exceptions::exception
what = ENOTCONN: not connected

Smtp and imap work correctly.

Checking the implementation of the POP3Connection :: authenticateSASL method, it does not contemplate two line authentication format in XOAUTH2:

https://docs.microsoft.com/en-us/exchange/client-developer/legacy-protocols/how-to-authenticate-an-imap-pop-smtp-application-by-using-oauth#pop-protocol-exchange