Hello Benoit, What mail client is being used, that doesn't support Oauth2?
Regards, Christopher Hawker ________________________________ From: mailop <mailop-boun...@mailop.org> on behalf of Benoît Panizzon via mailop <mailop@mailop.org> Sent: Friday, August 19, 2022 4:41 PM To: mailop@mailop.org <mailop@mailop.org> Subject: [mailop] Microsoft Office365 blocking non Oauth2 authentication on IMAP and SMTP. Hi Team I am involved in a large non profit organisation in Switzerland. A couple of years ago, that organisation got persuaded to switch to Office365 as they got a good offer for non profit organisations. One of the promises at that time: Everyone could continue working as before as all clients could connect via IMAP and SMTP, so migration all existing volunteer accounts and tools would work seamlessly. Most email user are 'external' volunteers. Now more and more co-volunteers, including myself get locked out of their email accounts, because Microsoft disabled non Oauth2 token authentication. Tools stop working. (usually found out after repeatedly going through the password reset recovery procedure and still not being able to log in). Using the web-based tools is not an option. The Problem: Most client are unable to use Oauth2. There are mailinglist tools which connect to a mailbox to process bounces as example. But any other tool generating emails and sending them via SMTP is affected. Some tools are able to do Oauth2, but the help from the 'Domain Administrator' is needed, to register those tools as 'trusted app' with Microsoft Azure to get a unique client-id for that tool, but then again the token renewal then fails after some time (this needs to be done via a HTTP request somehow) needing a lot of attention to keep those tools running. Microsoft Support states, they won't re-enable tokenless authentication and the provide no help at all to get tools back online which do not work any more. I wonder: How do other Microsoft Office365 customers mitigate this situation? -- Mit freundlichen Grüssen -Benoît Panizzon- @ HomeOffice und normal erreichbar -- I m p r o W a r e A G - Leiter Commerce Kunden ______________________________________________________ Zurlindenstrasse 29 Tel +41 61 826 93 00 CH-4133 Pratteln Fax +41 61 826 93 01 Schweiz Web http://www.imp.ch ______________________________________________________ _______________________________________________ mailop mailing list mailop@mailop.org https://list.mailop.org/listinfo/mailop
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