SMTPTracker extends your SMTP server with message tracking, content saving, sql logging and anti-spam abilities. SMTPTracker works with Microsoft SMTP service, Exchange Server 2000, Exchange Server 2003 and other systems based on IIS smtp service.
Key benefits: low cpu usage, realtime anti-spam filtering, message content tracking, logging and saving, Active Directory integration, SpamAssassin to Exchange2003 SCL header conversion support.