Version 3.4.1 is available upstream. Please consider updating! It seems that version 3.4.1 is available upstream, while the latest version in the Gentoo tree is 3.3.1. You think this warning is false? Read more about it here.
Dbmail is the name of a group of programs that enable the possiblilty of storing and retrieving mail messages from a database. Currently MySQL, PostgreSQL and SQLite can be used as database backends.