A client use Office 365 connected to his Active Directory Domain server.
Freshdesk can't connect to download and to send messages. I think the problem is STARTTLS protocol.
I have configured succefully the account in Thunderbird with this parameters:
Incomming server:
Host: outlook.office365.com
Port: 143
Login: Plain
Security: STARTTLS
Outing server:
Host: smtp.office365.com
Port: 587
Login: Plain
Security: STARTTLS
If I set security to SSL/TLS in thunderbird not working.
We need to add STARTTLS support to Freshdesk.