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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.

The interface is simple and powerful, and I love that you give me all the options I need to protect my Exchange Server from open relay spam. It's nice to see an honest company charging a fair price for well written software.

Mike Harrison, Eclipse Marketing Inc.

The 30-day statistics below are generated from automated, anonimized reports received from ORF users worldwide.
Total emails filtered Spam rate
357,091,370 64.04%
More
  • ORF 6.0 Beta R05

    The new update is a minor bugfix release that also extends the evaluation time of any ORF 6.0 beta installation to March 31, 2019. Get it now from the beta site.
  • 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.
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.
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