To configure a syndication feed for obtaining information about the builds of certain build configurations:
In the top right corner of the TeamCity web UI, click the arrow next to your username, and select My Settings & Tools.
In the TeamCity Tools section, in the Syndication Feed section click the Customize link.
In the Feed URL Generator page specify the build configurations and events (builds and/or changes) you want to be notified about, and define authentication settings.
Copy the Feed URL, generated by TeamCity, to your feed reader, or click Subscribe.
Preview summary of the subscription and click Subscribe now.
User's Guide: Feed URL Generator