Qpsmtpd::Plugin::Quarantine 0.36

Qpsmtpd::Plugin::Quarantine is a filter outbound email to prevent blacklisting.

SYNOPSIS

Qpsmtpd quarantine plugin:

use Qpsmtpd::Plugin::Quarantine;

The quarantine.cgi web page:

use Qpsmtpd::Plugin::Quarantine::CGI;
main();

In crontab or nightly:

perl -MQpsmtpd::Plugin::Quarantine::Batch -e cronjob()

In crontab (every five minutes?):

perl -MQpsmtpd::Plugin::Quarantine::Batch -e sendqueued()

From the command line:

perl -MQpsmtpd::Plugin::Quarantine::Batch -e mailq()

Qpsmtpd::Plugin::Quarantine implements and outbound mail filter. A substantial number of internet sites will blacklist senders if they send too much spam. Most will do this without providing enough feedback for you (the sender) to figure out where the spam is coming from or why you were blacklisted.
I run ISPs and Ive been blacklisted by AOL. Ive been blacklisted by Comcast. Why? Sometimes its because someone is exploting an insecure formmail CGI on my system and sometimes its simply because I allow users to forward email and when they do, they end up forwarding spam.

Qpsmtpd::Plugin::Quarantine understands that sometimes the sender is the victim and sometimes not. The normal situation is that Qpsmtpd::Plugin::Quarantine will bounce things that it thinks are spammy back to the sender with a URL to allow the sender to push the message onwards. However if the particular recipient is on an override list or is very popular (maybe because someone is forwarding their mail to the recipient or maybe theyre on a mailing list) then instead of bouncing to the sender, it will send a note to the recipient letting them know there is a message waiting for them.

Qpsmtpd::Plugin::Quarantine will only send bounces or notifications every so often (configurable). Both senders and recipients have the option (via the website) to have their mail silently discarded so that they dont get bothered again.

Qpsmtpd::Plugin::Quarantine uses OOPS to store its persistent data in mysql or PostgreSQL.