ERROR : Mail authentication failed....

(1) Share

Report

Posted on by CU21011313-0

Hi, dev community I'm trying to configure email in d365 f&o from email parameters even I'm providing correct credentials for username and password but every time I try testing the connection this error comes!
any solution for this or how to correct this issue

answers are highly appreciated
complete error :

ERROR : Mail authentication failed. Please verify your SMTP user name and password. If your SMTP server doesn't support authentication, please clear the SMTP user name and password. Server smtp.office365.com:587 using SSL/TLS supports the following authentication options: LOGIN, XOAUTH2

Categories:

Dynamics 365 Finance

I have the same question (0)

All responses (2)

Answers (1)

Sort by

Mohamed Amine Mahmoudi 26,803 Super User 2026 Season 1 on at

Like (1)

Report
Copy link

Link copied!

Moved from FastTrack for Dynamics 365 form

Was this reply helpful? Yes No
Verified answer

Mohamed Amine Mahmoudi 26,803 Super User 2026 Season 1 on at

Like (1)

Report
Copy link

Link copied!

Hi @CU21011313-0,

You would also need to verify that MFA registration is disabled for that mailbox

App passwords do not work with modern auth: https://learn.microsoft.com/en-us/entra/identity/authentication/howto-mfa-app-passwords

Best regards,

Mohamed Amine MAHMOUDI

Was this reply helpful? Yes No