Greylite is an implementation of a modified
greylisting technology for fighting spam on mail
servers running qmail. It does not require qmail
to be patched, but is simply plugged in to the top
of the qmail chain, thus working smoothly with
already-patched installations. It is
self-contained because it uses SQLite, and is easy
to setup and maintain, small, and fast.
License: BSD License (revised)
Changes:
Suspicion now supports a manifold of rule types:
regex, envvar, geoip. Policies can be defined with
respect to external modules and with respect to
the origin of the client.