Jamama, Java Managed Mail Server.

See:
Description

Packages

com.admc.jamama	Essential central classes for the Jamama application, and some classes shared among other packages.
com.admc.jamama.director	Jamama Routing Directors
com.admc.jamama.dtd
com.admc.jamama.dtd.impl
com.admc.jamama.dtd.impl.runtime
com.admc.jamama.repository	Jamama Respositories
com.admc.jamama.router	Jamama Servers
com.admc.jamama.server	Jamama Routing Directors
com.admc.jamama.server.proxy	The Jamama Proxy Server
com.admc.jamama.server.smtp	The Jamama SMTP Server

Jamama, Java Managed Mail Server. This software is available for download at http://admc.com/jamama/dist/jamama.zip It is redistributable according to the Gnu Public License.