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The new ORF 5. Simply different.

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ORF is our award-winning spam filtering software for Microsoft® Exchange Server.

Layered protection

No single technology catches all spam. The 23 layers of tests in ORF ensures the maximum detection rates.

ORF ♥ administrator

From the industry's best logs to the friendly UI, ORF works for the administrator, saving time, resources and sanity.

No false positives

Never miss an important email again. ORF ships with multiple dedicated tools against false positives.

Proven performance

Deployed at 11,000 organizations in 112 countries, ORF filters thousands of emails every second, 24 hours a day.

Let me say you have an excellent product. Seriously. Your current pricing scheme puts you on the top in my book, over all the competition. Not to mention the ease of use and how quick it is to install and configure. Truly an excellent platform, and you're on your way to an excellent future. I just wanted to pass along the thank you.

Erik Herrera, IT Administrator, The Elegant Office

The 30-day statistics below are generated from automated, anonimized reports received from ORF users worldwide.
Total emails filtered Spam rate
357,190,599 61.91%
  • ORF 6.0 Beta R04

    ORF 6.0 Beta R04 fixes a major bug that was found in the last beta release and improves the overall filtering performance of ORF. Download the new version from the beta site.
  • ORF 6.0 Beta R03

    The third release of ORF 6.0 with extended expiration is now available. Update your Beta R01 or R02 release to extend your evaluation time to February 28, 2019. Get it now from the beta site.
  • ORF 6.0 Beta R02

    The latest beta release of ORF 6.0 with Exchange 2019 support and bugfixes is now available. Get it now from the beta site.
Ready to experience ORF? Take the tour, try ORF now free for 42 days, or take the deep dive and buy a license.
We offer a 90 day, no questions asked money-back guarantee.