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
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 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