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Proofpoint, Inc.

What is inbound domain spoofing and how do I prevent it?

Situation Your account domain is being spoofed in either the from header or the envelope sender.
Solution Activate Inbound Domain Spoofing Protection on the Essentials console.

 

Inbound domain spoofing protection

What does it do?

This rule is designed to quarantine external inbound message that appear to come from your organization. This tool will only work if you deliver your internal e-mail from your domain locally. If you receive e-mail from an external source using your domain name your messages will get quarantined.

How to enable 

  1. Navigate to Company Settings > Spam.
  2. Enable Inbound domain spoofing protection.

inbound domain spoofing.png

Messages in the quarantine should now appear with a new category: Domain Spoofing