PerimeterProtect offers message quarantining, reporting, policy and service control, as well as integration with Microsoft Exchange Server 2003 and Exchange Server 2000. According to the vendor, the platform combines six filtering layers designed to identify 99% of spam with less than 0.02% false positives. PerimeterProtect's content filtering capabilities enable administrators to configure profiles and policies via a Web-based console.

PerimeterProtect's "Quarantine Central" offers users access to quarantined messages. Moreover, it gives users and administrators the ability to directly control "allow/deny" lists and view filtering reports. An "auto-allow" function is also available, automatically adding an E-mail address to the "allow list" when it is sent two or more messages by the user.

Quarantine Summaries consolidate all spam and virus headers into a list for review. The list is delivered to each user's E-mail account on a predetermined schedule, with message retrieval available via a link to the Quarantine Central Web interface. Users can customize the report frequency, delivery time and filter the summary results based upon a configurable "spam score" range. Administrators can turn summaries on or off, control which users get summary reports and manage the report delivery "From" address.

Microsoft Exchange customers can synchronize PerimeterProtect with their Exchange 2003 and Exchange 2000 servers via a Windows-based LDAP synchronization tool. This ensures invalid accounts are blocked at the network perimeter and Exchange aliases, groups and directory information are automatically available to the Web quarantine.