[kmail2] [Bug 489610] New: XOAUTH2 with 2FA requires daily re-authentication for SMTP

[Aaron]

https://bugs.kde.org/show_bug.cgi?id=489610

            Bug ID: 489610
           Summary: XOAUTH2 with 2FA requires daily re-authentication for
                    SMTP
    Classification: Applications
           Product: kmail2
           Version: unspecified
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: normal
          Priority: NOR
         Component: general
          Assignee: kdepim-bugs at kde.org
          Reporter: mullein at adelie.io
  Target Milestone: ---

SUMMARY
When using XOAUTH2 with two-factor authentication for an Outlook account,
outgoing email fails after some period of time and a re-authentication is
required to send mail again. Incoming mail with IMAP seems to work fine.
Outgoing mail works as expected for some period of time after authenticating
with 2FA. 


STEPS TO REPRODUCE
1. Set up SMTP with 2FA and XOAUTH2
2. Wait an unknown period of time
3. Try to send an email

OBSERVED RESULT
Authentication for the outgoing mail fails.

EXPECTED RESULT
Outgoing mail should send without issue.

SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Gentoo Linux
(available in About System)
KDE Plasma Version: 6.1.1
KDE Frameworks Version: 6.3.0
Qt Version: 6.7.1
Kmail: 24.05.1

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