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Category: Policy Enforcement
FirePay is an implementation of the HashCash/MIME (application/postage-hashcash) specification. HashCash is an anti-spam, anti-DoS system for email. The concept centers around the sender of the mail completing a computationally expensive task (in this case, generating hash collisions) that the recipient can verify very quickly. This allows the sender to "pay" for transport in CPU cycles, creating artificial scarcity. Programs are included to add payment to messages (for the sender) and to verify message payment (for the recipient).
The SpamBouncer is a set of procmail instructions that search the headers and text of your incoming email to see if it meets one or more of a list of conditions for probable spam. It will then either tag the suspected spam and return it to your main incoming mailbox, tag the suspected spam, delete spam from known spam sources, and file suspected spam in a separate folder, send a simulated MAILER-DAEMON daemon "bounce", complain to the "upstream providers" of known spammers or spam sites/domains, etc.
MailSleuth Email Management Package
Mailsleuth is an email content management system. It is intended that one day it may match the features of commercial products such as MimeSweeper from Baltimore. It is designed for large companies or Service Providers.
Spammer is an anti-spam mail filter for sendmail. It uses libmilter to communicate with sendmail. Spammer checks client IP addresses as well as all IP addresses (and everything that looks like an IP address) in Received headers against a DNSBL database.
Active Spam Killer
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.
SaveMyModem is an anti-spam, mail-shaping, and delete-on-server mail tool. It is designed for users with slow dialup connections, who are tired of downloading large amounts of spam and worm and virus attachments.
PheTail automatically tails an amavisd-new logfile for activity. Whenever relevant activity is found, it is written to a SQL database.
Vipul's Razor is a distributed, collaborative, spam detection and filtering network that exploits the broadcast characteristic of spam distribution to limit its propagation. The primary focus of the system is to identify and disable an email spam before its injection and processing is complete. Razor establishes a distributed and constantly updating catalogue of spam in propagation. This catalogue is used by clients to filter out known spam.
MailBounce adds a bounce feature to Mozilla/Netscape (and possibly other mail clients) that does the same as the bounce feature of console mail clients such as mutt. When a mail is bounced, its content isn't touched or marked with ">", and the From: address isn't changed either, so a reply to a bounced mail will go to the original mail sender, not to the bouncing person.
SpamCruncher uses the SpamAssassin engine to identify spam on remote POP3 or IMAP servers.
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