Links – For Windows administrators; articles about Windows technology, reviews of useful admin tools, tips for daily work, and news relevant for system administrators – Business Security
Al Iverson – Blog about email, anti-spam, deliverability and related topics – Security/Hacking Blog
TheEmailAdmin – Email management, storage and security
Ephemeral Law – A blog about the law surrounding information security and data privacy
ExchangeExchange – A community dedicated to Exchange and related technology
Glen’s Exchange Dev Blog – Pushing the Envelope in Messaging Development
Security Tools and Tips – Raising awareness about internet security and online security threats
Spam Help –  An extensive resource featuring articles, software, services, appliances, tools, books and anything related to spam
Spam Notes – A law blog covering electronic communications,email, social networks, privacy, and more – Providing the best collection of anti-spam links and resources
Terry Zink – Anti-malware Blog; Protecting your mail from the scum of the internet – Ideas Life & Technology