PUBLIC MARKS with tags network & mail

Mail Avenger is a highly-configurable, MTA-independent SMTP server daemon. It lets users run messages through filters like ClamAV and SpamAssassin during SMTP transactions, so the server can reject mail before assuming responsibility for its delivery. Other unique features include TCP SYN fingerprint and network route recording, verification of sender addresses through SMTP callbacks, SPF (sender policy framework) as a general policy language, qmail-style control over both SMTP-level behavior and local delivery of extension addresses, mail-bomb protection, integration with kernel firewalls, and more.

Greylisting is a new method of blocking significant amounts of spam at the mailserver level, but without resorting to heavyweight statistical analysis or other heuristical (and error-prone) approaches. Consequently, implementations are fairly lightweight, and may even decrease network traffic and processor load on your mailserver. Greylisting relies on the fact that most spam sources do not behave in the same way as "normal" mail systems. Although it is currently very effective by itself, it will perform best when it is used in conjunction with other forms of spam prevention. For a detailed description of the method, see the Whitepaper. The term Greylisting is meant to describe a general method of blocking spam based on the behavior of the sending server, rather than the content of the messages. Greylisting does not refer to any particular implementation of these methods. Consequently, there is no single Greylisting product. Instead, there are many products that incorporate some or all of the methods described here.

Active Wall Free Edition is the professional and free gateway filtering software. The main functions are url wildcard filter, web content filter, post keyword filter, upload file wildcard filter, traffic monitor. It installed in gateway server and provides continuous enterprise-wide protection against the full range of Internet threats, from viruses and phishing attacks to inappropriate use of system resources to regulatory non-compliance. Active Wall Free Edition includes the following plugins: Show Flux,HTTP Filter. 10 License only, free forever. http://download.lanctrl.com/en/awallfree.msi

Ginko is the name of an email client with some unique features. Unlike other such communication tools it provides a very lean and simple user-interface, true message threading (no more answers before the corresponding question) and much more. Currently it

The complete and fast mail application for GNUstep and Mac OS X.

Balzac is a new email application for OS X 10.3, which aims to provide a simple view on your mail whilst allowing fast, sophisticated searches of past correspondence.

GPGMail is a plug-in for Apple's Mail, providing a front-end to gpg for some operations. It allows you to read/write encrypted messages, as well as electronically signed messages.

JunkMatcher filters spam using flexible regular expressions, IP query against multiple blacklists (such as SpamCop.net) and varoius other techniques such as email property matching, HTML final rendering matching etc. You can match against almost every bit