MAPI over HTTP (Messaging Application Programming Interface over HTTP)

MAPI over HTTP is a protocol that allows a client to access email messages on a Microsoft Exchange Server. The Exchange server uses HTTP to communicate with the client, and the client uses MAPI to access the messages.

MAPI over HTTP was introduced in Exchange Server 2013, and it is the preferred protocol for accessing Exchange Server 2016. MAPI over HTTP offers several benefits over the previous protocol, such as better performance and stability.

What is the difference between RPC over HTTP and MAPI over HTTP?

RPC over HTTP and MAPI over HTTP are both protocols that allow Outlook to connect to a Microsoft Exchange Server. RPC over HTTP is the older of the two protocols, and it uses the RPC (Remote Procedure Call) protocol to communicate with the server. MAPI over HTTP uses the MAPI (Messaging Application Programming Interface) protocol. MAPI over HTTP is a newer protocol, and it is more efficient than RPC over HTTP.

How do I enable MAPI over HTTP?

1. Open the Exchange Management Console.
2. Navigate to Server Configuration -> Client Access.
3. Select the server on which you want to enable MAPI over HTTP and click the Edit button.
4. Select the Enable MAPI over HTTP checkbox.
5. Click the Save button. What port does MAPI over HTTP use? MAPI over HTTP uses port 443 by default. Is MAPI over HTTP Secure? Yes, MAPI over HTTP is a secure protocol. It uses SSL/TLS to encrypt communication between the client and server, and it also uses NTLM authentication to ensure that only authorized users can access the data. Is MAPI over HTTP modern authentication? Yes, MAPI over HTTP supports modern authentication.