Email Filtering Service
aSentry MailGuard provides customers the only integrated email security solution that blocks spam, viruses and other email-borne threats before they reach your email system. MailGuard also provides a comprehensive set of tools to secure email connections and regulate email delivery. By keeping volumes of junk email off of your network, we help our customers free up network resources and contain costs — and increase employee productivity and profits.

In addition to award winning anti-spam and anti-virus technology, MailGuard is the only email security and management solution that defends against Directory Harvest Attacks — an aggressive technique that spammers use to gather email addresses by running scripts against SMTP.