The following table lists Exchange Server 2003 services and their corresponding ports. For more information about how to configure Exchange front-end servers, including the ports that are associated with various scenarios, see the technical article, Using Microsoft Exchange 2000 Front-End Servers. Although that article relates to Exchange 2000 Server, the information applies to Exchange Server 2003 as well.
|
Services (dependencies)
|
Ports inbound
|
Ports outbound (initiate connections to)
|
Notes
|
|---|
|
Microsoft Exchange System Attendant
|
135 & other RPC
Other ports required for RPC over HTTP
|
|
All core Exchange services require the Microsoft Exchange System Attendant.
For more information about RPC over HTTP port configuration, see the guide Exchange Server 2003 RPC over HTTP Deployment Scenarios.
|
|
Microsoft Exchange Information Store
(Microsoft Exchange System Attendant)
|
135 & other RPC
Other ports required for RPC over HTTP
|
User Datagram Protocol (UDP) packets to random ports for new mail notification
|
Runs the Exchange databases.
For more information about RPC over HTTP port configuration, see the guide Exchange Server 2003 RPC over HTTP Deployment Scenarios.
|
|
Microsoft Exchange MTA Stacks
(Microsoft Exchange System Attendant)
|
135 & other RPC
102 for X.400 over TCP
|
135 & other RPC
102 for X.400 over TCP
|
Microsoft Exchange MTA Stacks are required for legacy connections to Exchange Server 5.5 servers. Port 102 opened only for active X.400 connections.
|
|
Simple Mail Transfer Protocol (SMTP)
(IIS Admin Service)
|
25
|
25
|
Exchange store requires SMTP
|
|
Microsoft Exchange Routing Engine
(IIS Admin Service)
|
691
|
691
|
Routing Engine service
|
|
World Wide Web Publishing Service
(IIS Admin Service)
|
80 & 443
|
80 on the front-end server
|
Required for Outlook Web Access and public folder administration
|
|
Exchange ActiveSync
(IIS Admin Service)
|
|
UDP 2883 on the front-end server
|
Required for SP2 Exchange ActiveSync Direct Push
|
|
Microsoft Exchange POP3
(IIS Admin Service)
|
110 & 995 (SSL)
|
110 on the front-end server
|
Required for POP3 access
|
|
Microsoft Exchange IMAP4
(IIS Admin Service)
|
143 & 993 (SSL)
|
143 on the front-end server
|
Required for IMAP4 access
|
|
Network News Transfer Protocol (NNTP)
(IIS Admin Service)
|
119 & (563 SSL)
|
|
N/A
|
|
Microsoft Exchange Site Replication Service
|
379, 135 & other RPC
|
135 & other RPC
|
Depends whether Exchange Server 5.5 servers are in the organization.
|
|
Active Directory Connector
|
NA
|
379, 389, can be configured
|
Depends whether Exchange Server 5.5 servers are in the organization
|
|
Microsoft Exchange Event
(Microsoft Exchange Information Store)
|
|
|
Not automatic by default
|
|
Exchange Management
(Windows Management Instrumentation)
|
|
|
This is not a required service; however, Microsoft Operations Manager and other programs do not function without this service.
.gif) Note: |
Port 445 is required for Message Tracking
|