Looking for best practices to reduce footprint around email protocols as they relate to meeting rooms and RealConnect and Trios and Group Series.
Adam, I'm not quite sure what the scope of this question is but in terms of a Trio connecting to a mailbox in Exchange Server or Exchange Online or the OTD service connecting on behalf of a device like a Group Series or Studio X series device the only protocol used is HTTPS via Exchange Web Services (EWS). The devices do not use SMTP, POP, IMAP, etc.
Thanks Jeff. My motivation was around security hygiene - what can I turn off that I don't need. That's exactly what you answered.
I had a second thought. Though the Poly device may not require MAPI - I assume MAPI will still be necessary in order to see a calendar in Outlook for desktop. If you turn off MAPI - then you'll only be able to manage the calendar via the web. That may not be suitable for many orgs.