IIJ Adds Spam Filter to IIJ4U Service for Consumer Customers

Business Wire, Dec 15, 2004

TOKYO -- Internet Initiative Japan Inc. (IIJ, NASDAQ: IIJI), one of Japan's leading Internet access and comprehensive network solutions providers, today announced it will add a spam filter feature to its Internet service for consumer customers, IIJ4U, starting December 16, 2004.

The amount of spam, unsolicited E-mail sent to PCs and mobile phones, is growing dramatically year after year, and with it, the damage from computer viruses and Internet fraud. In a survey of IIJ4U users conducted by IIJ between October and November 2004, the number of people who had received spam mail was 96%, and 13% of those surveyed reported receiving a fraudulent bill, which is another indication of the seriousness of the problem.

IIJ took the MX Logic Email Defense Gateway - Service Provider Edition it uses to provide spam filtering for its corporate E-mail outsourcing service, and applied it to the service for consumer customers. This spam filter feature determines a spam rating, expressed as a percentage, for all mail addressed to a customer. The filter is then set based on a particular spam mail score, enabling spam mail to be sent to the trash folder on the IIJ4U server without users ever having to download it to their computer.

This new filtering function is provided free of charge to customers using the optional Virus Protection service, which detects and deletes viruses. There are also plans to extend this spam filtering feature to IIJmio in early 2005.

IIJ will continue to expand its services to provide a safer mail environment for all customers.

About MX Logic

MX Logic, Inc. provides innovative email defense solutions that ensure email protection and security for businesses, service providers, government organizations, and resellers and their customers. Deployed as a managed service or on-premise software, the company's feature-rich solution suite is the industry's most comprehensive, flexible and easy to use.

MX Logic processes hundreds of millions of messages per day for over 3,000 organizations worldwide. In addition, MX Logic is the only email defense company to offer both a managed service and a turnkey, carrier-grade software solution. For more information, visit www.mxlogic.com.

About IIJ

Founded in 1992, Internet Initiative Japan Inc. (IIJ, NASDAQ: IIJI) is one of Japan's leading Internet-access and comprehensive network solutions providers. The company has built one of the largest Internet backbone networks in Japan, and between Japan and the United States. IIJ and its group of companies provide total network solutions that mainly cater to high-end corporate customers. The company's services include high-quality systems integration and security services, Internet access, hosting/housing, and content design.

The statements within this release contain forward-looking statements about our future plans that involve risk and uncertainty. These statements may differ materially from actual future events or results. Readers are referred to the documents furnished by Internet Initiative Japan Inc. with the SEC, specifically the most recent reports on Forms 20-F and 6-K, which identify important risk factors that could cause actual results to differ from those contained in the forward-looking statements.