PCCC proudly supports a variety of projects in the Anti-Spam Community including:

• Apache SpamAssassin is one of the key components in our spam filtering process. PCCC has supported the project both through donated resources for web/DNS as well as donating considerable time and code to this open source project. We also provide one of the SpamAssassin sa-update mirrors.
• Public mirror and hosting provider for the URIBL Blacklist
• Public mirror for the SURBL Blacklist
• Public mirror for the PSBL Blacklist
• Public mirror for the Anubis Networks Mailspike Blacklist
• Public mirror for the EMAILBL Blacklist
• We also use, recommend and support MIMEDefang.
• Public server operator for the Rhyolite Distributed Checksum Clearinghouses (DCC).
• Creator, maintainer and public mirror for the PCCC Multi RBL.
• Creator and public mirror for KAM’s anti-spam rules, KAM.cf.
• Maintain the E-mail and Anti-Spam Compendium for System Administrator’s looking for a crash course in e-mail and anti-spam.