Bug#118149: IT: pop-before-smtp -- watch log for pop/imap auth, notify Postfix to allow relay
Spam prevention requires preventing open relaying through email servers.
However, legit users want to be able to relay. If legit users always
stayed in one spot, they'd be easy to describe to the daemon. However,
what with roving laptops, logins from home, etc., legit users refuse to
stay in one spot.
pop-before-smtp watches the mail log, looking for successful pop/imap
logins, and posts the originating IP address into a database which can be
checked by Postfix, to allow relaying for people who have recently
downloaded their email.
Contrary to other similar tools pop-before-smtp needs no hacking in the
mail daemons. On the other hand it requires the pop3/imap daemons to run
on the same machine as pop-before-smtp and postfix.
It was downloaded from:
Bennett Todd <firstname.lastname@example.org>
pop-before-smtp is Copyright 1999, 2000, 2001 Bennett Todd.
Anyone is free to use or redistribute pop-before-smtp in any way,
for any purpose, free or commercially, unmodified or modified, as
long as (a) the current changelog and credits aren't removed from
the source, and (b) changes that are made are noted in the source,
e.g. with a comment or with a changelog entry.
Alternatively you are welcome to distribute pop-before-smtp under
the terms of the GPL, or the terms of the BSD License, or the terms
of the Perl Artistic License.
Jonas Smedegaard (+45 40843136) http://dr.jones.dk/~jonas/
Spiff ApS (= IT-guide dr. Jones ApS) http://dr.jones.dk/
Debian GNU/Linux developer http://people.debian.org/~js/