WBL is a really simple tool that can be used in a
.qmail file for managing a white/black list of
email addresses. It serves as a pre-filter to
allow known-good friends and associates bypass the
usual gauntlet of filters. Note that WBL is not
intended to be a spam filter, it is simply an
easy-to-use whitelist/blacklist management tool
that serves to keep email that you really want to
see out of your normal filters.
