Six steps to stopping spam Guardian Unlimited
More and more junk mail is finding its way to our inboxes every day. But what can be done to combat the viagra merchants? Charles Arthur examines some solutions.

Freedom to Tinker » Blog Archive » A Challenging Response to
Link: A Challenging Response to Challenge-Response. Prof. Ed Felten has added his voice to those concerned about challenge-response anti-spam
Challenge/Response Spam Filtering Software and Services - About Email
At least that's what challenge/response spam filtering software and services Personal vqME Anti-Spam keeps your email Inbox free of unwanted mail by
Is Challenge/Response filtering a good or bad thing?
To help identify and stop these bugs, I wrote a white paper on best practices for challenge/response anti-spam systems. Buggy C/R that challenges replies,
Anti-spam for Exchange Server 2003, Exchange 2000, Exchange 5.5
Policy Patrol Spam Filter: anti-spam tool for Exchange Server 2003, Policy Patrol include un avanzato sistema di challenge/response e permette agli
SicurezzaInformatica.it: Challenge and Response, nessuna panacea
Dopo diversi anni in cui se ne parlava ho finalmente avuto una dimostrazione "live" dei tanto discussi sistemi antispam Challenge and Response.

Anti-spam for Exchange Server 2003, Exchange 2000, Exchange 5.5
Policy Patrol Spam Filter: anti-spam tool for Exchange Server 2003, Policy Patrol include un avanzato sistema di challenge/response e permette agli
SicurezzaInformatica.it: Challenge and Response, nessuna panacea
Dopo diversi anni in cui se ne parlava ho finalmente avuto una dimostrazione "live" dei tanto discussi sistemi antispam Challenge and Response.
Justin Mason: Happy Software Prole » The Problem with Anti-spam
A great summary of the issues surrounding challenge-response anti-spam systems, from Kee Hinckley on the ASRG list. Summary: they’ll work fine for
Spam Blocker For Microsoft Outlook - Download MailFrontier
junk mail anti spam software spam software spam control email filter block spam phishing Challenge/Response – challenge all, some, or none of your email
IceWarp Italia - Merak - Modulo Instant Antispam
Il modulo Merak Instant AntiSpam (MIAS) è la soluzione antispam più completa e potente Meccanismo Challenge/Response. Questa funzionalità consente di
[Antispam] Challenge/Response
[Antispam] Challenge/Response. Andrés Taylor andres.taylor at gmail.com Thu Jun 24 16:14:44 CEST 2004. Previous message: [Antispam] Spamassassin vinner test
ISP-Planet - Equipment - Addressing an Anti-Spam Challenge
Founded last year, Gennux is no "first mover" in the anti-spam space, but its intriguing ideas solve some problems that other challenge-response systems
Spam blockers may wreak e-mail havoc | Perspectives | CNET News.com
All these should be obvious, but many challenge-response systems just don't follow them. Fortunately, the Internet Engineering Task Force's Anti-Spam