I need your help with my on Premises installation.

We have moved to O365 from Google and the problem is that the ServiceDesk Plus is not fetching emails from a 365 mailbox.

1. It’s not hidden from global addresses
2. SMTP Auth is on
3. Ensure that username and pass are ok

It’s sending but not fetching.

I’ve tried with a Google email , everything is fine.

It seems that Microsoft rejects the access.   

Do you have any idea why?

Pls help , I’m attaching the log file.