Forum Discussion
SMTP XOAUTH suddenly failing for Outlook personal with '535 5.7.3 Authentication unsuccessful'
Please see here for the details: https://techcommunity.microsoft.com/t5/outlook/smtp-xoauth-suddenly-failing-for-outlook-personal-with-535-5-7-3/m-p/3734392 Note that this is about personal a...
It seems like Microsoft have quietly resolved this issue, it has suddenly started working for us. https://learn.microsoft.com/en-us/answers/questions/1168242/smtp-send-oauth-permission-not-working-for-consume
Yes, it seems there was a mystery fix happened on MS side. 🙂
Anyway, due to this issue I was able to produce a Test Tool written in Rust Programming Language just to test this workflow. https://github.com/LorenzoLeonardo/microsoft-smtp-xoauth2-test-tool
Anyway, due to this issue I was able to produce a Test Tool written in Rust Programming Language just to test this workflow. https://github.com/LorenzoLeonardo/microsoft-smtp-xoauth2-test-tool
Enzo_Tech Is this issue fixed now i tried testing SMTP Xoauth with my outlook personal account. Iam getting the same error. If it is fixed can you help me the solution?
