Office 365 IMAP plaintext deprecated - how to switch to IMAP OAUTH authentication

[jamie]

As of 1 October 2022, Microsoft deprecated plaintext IMAP authentication on the Office 365 platform. Thus, for those using the IMAP protocol to retrieve journaling traffic from Office 365 (not Exchange), it is necessary to setup OAUTH authentication in MailArchiva by upgrading MailArchiva to V8.11.13 or higher and to refer to these additional steps. In particular, steps A, B, C1, D1 and E1 under the heading MailArchiva On-Premise Setup. Note: This issue doesn't impact those receiving Office 365 journaling traffic via the SMTP protocol. If you experience problems configuration IMAP OAuth auth, refer to these troubleshooting steps.