There are two Relay Server deployment
options: the Sybase Hosted Relay Service, and local Relay Server installation.
Sybase Hosted Relay Service
Sybase Hosted Relay Service provides Internet-hosted Relay Servers, for temporary use with research, development, and test systems.
Relay Server Installation
A Relay Server installation meets longer-term needs, and it is required for Relay Server functionality in an Unwired Platform production system.