Email Hosting Providers

A technical specification created by a group of organizations that want to help reduce the potential for email-based abuse

SPF

SPF

The Sender Policy Framework is an open standard specifying a technical method to prevent sender address forgery.

Operating Systems and Servers
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Last technology detected on Friday, September 26, 2025. We know of 6 live technologies on caption-viewer.com and historical technologies back 25 years. Link to this Page

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