Active Spam Killer (ASK) protects your email
account against spam by confirming the sender's
email address before actual delivery takes place.
The confirmation happens by means of a
"confirmation message" that is automatically sent
to all "unknown" users. Once the sender replies to
that message (a simple reply will do), future
emails from that person will be delivered
immediately. You can also specify (regexp)
addresses to be immediately accepted, rejected
(with a nastygram) or ignored. The package also
includes a utility to scan your old mailboxes and
generate a list of emails to be accepted
automatically.
