This is an old revision of the document!
It's really nice standalone mail server.
Written in JAVA, can be scaled to high numbers of nodes.
I have used mysql based setup
database.driverClassName=com.mysql.jdbc.Driver database.url=jdbc:mysql://localhost/james database.username=james database.password=james vendorAdapter.database=MYSQL openjpa.streaming=false
Now download mysql jdbc driver from dev.mysql.com