Hello,
I've recently (three weeks ago) enabled mapi/http on a per mailbox level for my personal mailbox and all of the mailboxes I have access to in my Outlook profile, to enable some performance testing before enabling mapi/http on a organisational level.
The environment I am running is as follows:
Exchange 2013 CU12 CAS/MBX
Outlook 2016 (Office 365 latest bits)
What I am seeing is persistent connections to both Public Folders, and Room Mailboxes using RPC/Http.
As I understand it, all connections in Outlook should be mapi/http given that we are only using Exchange 2013 servers.
The public folders and room mailboxes were present when we migrated from Exchange 2010 around two years ago.
I have recreated my Outlook profile, created a new profile on different machines, and used Outlook in "Online" mode.
The connections to PF's and room mailboxes still use RPC/Http
Below is a screenshot of my Outlook connection status:
Can anyone explain this behaviour please?
Thanks
Matt