A.3 Post Office Agent Port Numbers

Protocol

Default Port Number

TCP/UDP

TLS Available?

Description

MTP

7101

TCP

Yes

Message Transfer Protocol

Communication between the POA and the MTA

HTTP

7181

TCP

Yes

Hypertext Transfer Protocol

POA console

Using the POA Console

Internal Client/Server

1677

TCP/UDP

Yes

Local communication between the POA and GroupWise clients

External Client/Server

0

TCP/UDP

Yes

External communication between the POA and GroupWise clients (administrator-defined port number)

Securing Client Access through an External Proxy Server

IMAP

IMAP TLS

143

993

TCP/UDP

No

Yes

Internet Message Access Protocol

Communication between the POP and IMAP clients such as such as Gmail and Hotmail

Supporting IMAP Clients

SOAP

7191

TCP

Yes

Simple Object Access Protocol

Communication between the POA and SOAP clients such as the GroupWise Mobility Service, Evolution, and Blackberry Enterprise Server.

Supporting SOAP Clients

TCP

9000

4500

TCP

Yes

Communication from Blackberry Enterprise Server.

Communication from GroupWise Mobility Service.

Calendar Publishing

7171

TCP

No

Calendar Publishing Protocol

Communication between the POA and the Calendar Publishing Host

Changing Post Office Settings and Connecting the Calendar Publishing Host to a POA in the GroupWise 18 Installation Guide

SNMP

161

TCP/UDP

No

Simple Network Management Protocol

Communication between the POA and an SNMP management console

Using an SNMP Management Console