OAuth setup to Incoming Email is having trouble while Testing the connection

[SSHASTRY]

I am trying the Incoming Email setup in Jira Server using OAuth integration suggested by JIRA server.

While creating a mail server, I am able to Authorize with OAuth but on selecting the Test Connection i am seeing below error.

Unfortunately no connection was possible. Review the errors below and rectify:

• AuthenticationFailedException: AUTHENTICATE failed.

I have added the snippets.

When I tried with "Authentication method" as Basic Authentication, it worked for me. But I see a message as below. Am I missing something here?

This mail server uses basic authentication. This method is planned to be deprecated by Microsoft and Google. Update the authentication method to OAuth 2.0 to keep receiving mail. We recommend selecting OAuth to authenticate to this mail server. Basic authentication using only a password is planned to be deprecated by Microsoft and Google. Learn more

[Brant Schroeder]

@SSHASTRY Welcome to the Atlassian Community.

Did you register the application on the Azure AD side?

Here is some documentation https://confluence.atlassian.com/adminjiraserver/integrating-with-oauth-2-0-1013845729.html

[SSHASTRY]

Thanks @Brant Schroeder.

Yes I did follow the same instruction in the link for Azure AD integration. But the Azure AD settings is failing during Test Connection step.

[Brant Schroeder]

Is everything configured correctly on the Azure side to allow you to connect?  If the answer is yes have you confirmed your credentials by logging into the outlook application?

[SSHASTRY]

Yes, we took help from the IT team with setting up the Azure AD. And I could login and configure in the Outlook application.

[SSHASTRY]

Is there any suggestion which i need to check on the same concern? Can someone help as this is a urgent requirement?

[Brant Schroeder]

@SSHASTRY I would suggest submitting a ticket to Atlassian support. https://support.atlassian.com/contact/

I still think the issue is on the Azure side.  It is important that your IT team followed this documentation when setting up the authorization flow.  https://docs.microsoft.com/en-us/azure/active-directory/develop/v2-oauth2-auth-code-flow

What are they seeing on their side in the AD logs when you try and login?

[SSHASTRY]

Thanks @Brant Schroeder . I have opened a ticket with support team.