Block specific domain from sending emails to your domain Microsoft Exchange 2010

Enable Anti-Spam feature in Hub Transport

Open Exchange Management Shell

Go to the scripts folder, C:\Program Files\Microsoft\Exchange Server\V14\Scripts

Run the following Command:

./install-AntispamAgents.ps1

Restart MSExchangeTransport Service

Restart-Service MSExchangeTransport

Open Exchange Management Console (EMC)

Go to Organization Configuration -> Hub Transport -> Anti-spam

Right click “Sender Filtering” -> Properties -> Blocked Senders

Click Add… Add Individual e-mail address or Domain name

Click OK.

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