This package implements a plugin for D. J. Bernstein's "qmail" MTA (http://qmail.org/ ). It requires qmail to be compiled with the smtp-plugin-patch (http://qmail-spp.sourceforge.net/ ), hence the name. The plugin will perform a configurable number of checks on every envelope recipient of every incoming email. These checks are currently implemented:
- matching against local users (via getpwnam())
- matching against local aliases in ~alias/.qmail-[alias]
- matching against a fastforward-style aliases database (optional)