Network ports required for mail flow (no Edge Transport servers)
| Purpose | Ports | Source |
|---|---|---|
| Outbound mail | 25/TCP (SMTP) | Mailbox server |
| Outbound mail (if proxied through the Front End transport service) | 25/TCP (SMTP) | Mailbox server |
| DNS for name resolution of the next mail hop (not pictured) | 53/UDP,53/TCP (DNS) | Mailbox server |
What ports does Active Sync use?
ActiveSync requires WorldClient to use port 80 for non-secure (SSL) HTTP connections, and 443 for SSL/HTTPS connections, for both the built-in web-server or running under a third-party web-server like Microsoft IIS. This is an ActiveSync implementation requirement, so it cannot be changed to a different port.
What ports are required to be open for an Exchange 2013 server?
Network ports required for clients and services
| Purpose | Ports |
|---|---|
| IMAP4 clients | 143/TCP (IMAP), 993/TCP (secure IMAP) |
| POP3 clients | 110/TCP (POP3), 995/TCP (secure POP3) |
| SMTP clients (authenticated) | 587/TCP (authenticated SMTP) |
What ports does MAPI use?
A typical MAPI connection has the following flow:
- The client initiates a connection to the Exchange server on port 135.
- The Exchange server responds with a dynamic port from which the client can connect to MAPI.
- The client-side SteelHead intercepts the dynamic port response and moves it to port 7830.
What are the RPC ports?
Port Listing
| Type of Traffic | Port Number |
|---|---|
| RPC Dynamic Port Range | TCP/49152-65535, UDP/49152-65535 |
| SMB/Microsoft-DS | TCP/445, UDP/445 |
| RPC Endpoint Mapper | TCP/135 |
| SSH | TCP/22 |
What is the use of port 445?
Port 445 is a traditional Microsoft networking port with tie-ins to the original NetBIOS service found in earlier versions of Windows OSes. Today, port 445 is used by Microsoft Directory Services for Active Directory (AD) and for the Server Message Block (SMB) protocol over TCP/IP.
What ports does outlook use for RPC and AB services?
If the CAS server is configured with RPC and AB static ports, it will return the same; otherwise, it returns anything between ports 6005 and 59530 for the RPC and AB services. Outlook uses these ports to establish a connection with the mailbox and address book.
What ports does outlook use to access the CAS server?
Outlook requests the RPC and AB port numbers from the CAS server to access the mailbox and address book. If the CAS server is configured with RPC and AB static ports, it will return the same; otherwise, it returns anything between ports 6005 and 59530 for the RPC and AB services.
What port does Active Directory replication use for RPC?
By default, Active Directory replication remote procedure calls (RPC) occur dynamically over an available port through the RPC Endpoint Mapper (RPCSS) by using port 135. An administrator can override this functionality and specify the port that all Active Directory RPC traffic passes through. This procedure locks down the port.
How to set static port for Public folder access?
### If you like to set static port for public folder access we need to set the same key above on the public folder server. This is because outlook talks directly to the RPC Client Access service on the public folder server. Once it is set, restart the Microsoft Exchange RPC Client Access service.
