GAYLORD, MI — April 20, 2005 — Deerfield.com, an international provider of messaging and security software, announced today the successful completion of the Kerio Certified Security Administrators exam (KCSA). Seeking to further its existing relationship with Kerio, Deerfield.com technicians successfully completed the exam and earned the company Business Partner Certification from Kerio.

The Kerio Business Partner Program allows distributors and resellers access to additional resources direct from Kerio in order to better sell and support Kerio WinRoute Firewall and Kerio MailServer. The certification test is designed to reflect the culmination of knowledge derived from real-world experience with Internet security and Kerio Technologies’ products. Testing is recommended to partners with previous experience in messaging and firewall solutions and familiar with Kerio products—having used or tested them for 3 to 6 months.

“Deerfield.com sought this certification in the interest of better serving our customers,” said Mike Deerfield, Chief Executive Officer of Deerfield.com. “The certification program is designed primarily to enhance technical expertise on all Kerio products,” he continued. “Improving on the ability of Deerfield.com technicians to assist customers with all Kerio product deployments serves our customer service tradition very well.”

The Kerio Certified Security Administrators exam covers:

• The basics of Internet messaging
  
• The basics of Internet security with particular attention to firewall technologies
  
• Kerio WinRoute Firewall
  
• Kerio MailServer
• Troubleshooting Kerio Technologies products
• Kerio Technologies licensing policies

Kerio Products

Deerfield.com is the North American distributor for Kerio products, including WinRoute Firewall, Kerio MailServer and Kerio Server Firewall. Kerio Personal Firewall is also available via Deerfield.com’s popular Top 50 Applications website (www.top50apps.com).

For more information about Kerio products, or any of Deerfield.com’s other security and messaging software and Internet services, visit www.deerfield.com.

About Deerfield.com:

Founded in 1994 and headquartered in Gaylord, Michigan, Deerfield.com® is an International provider of Internet software and services designed to meet the connectivity, security and messaging needs of small-to-medium sized businesses and organizations. Deerfield.com publishes a leading suite of Internet products distributed via ESD (Electronic Software Distribution) globally through both direct and multi-tiered distribution channels. Deerfield.com continues to bring its vision of the Internet to its customers through a range of products including WinRoute Firewall, a flagship Internet sharing solution; DNS2Go®, the company’s dynamic DNS service; Shavlik HFNetChkPro, patch management software; and a newly commissioned family of products, appropriately named VisNetic®.