Vote for MailShield Server

The Pro feature set is a database-backed anti-spam and anti-relay application that can record SMTP transactions, and offers both administrator-level and end-user filtering controls. MailShield Server Pro is available for Windows, Linux and Solaris. New Pro Features for Administrators: Flexible Data Recording. MailShield Server's Pro feature set uses a SQL database that can record every SMTP session and email message that passes through your mail server. Per-Recipient Address Handling. Administrators can specify how MailShield Server Pro handles inbound email to every recipient email address. Messages to valid addresses can be protected by MailShield's anti-spam filters, while messages to all others—for example, "dictionary attack" addresses that spammers make up—can be rejected outright. MailShield Clustering. Several MailShield servers may be configured as a cluster, providing fallback and scalability. Mailshell Spam Recognition System (MSRS). Redesigned Administrator Web Interface. The Pro feature set includes a completely redesigned graphical user interface.