ARN now supports modern & secure OAuth 2.0-based authorization for Microsoft Office 365 SMTP settings. The admin will be able to set up MS Office 365 SMTP from the ARN’s configurations page.
Here are the steps
Head to the ‘configurations’ page of ARN available to Jira admins under the ‘Manage apps’ menu.
On the SMTP tab, select service provider - Office 365
In authorization, select ‘OAuth 2.0 authorization’
Add a connection name - give some name that will help you identify the connected email account.
Click on the ‘Connect your email’ button.
In the pop-up window add valid Office 365 email credentials of the email from which you wish to send ARN emails.
Authorize ARN app with the necessary permissions as mentioned in the pop-up.
That’s it, your Office 365 SMTP connection is now set up successfully.