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Deny traffic from IP adress

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Ben79

Ben79

IS-IT--Management
Feb 13, 2006
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SE
Hi

To be brief: We have a backup server which takes care of our mail if our Exchange server goes down. However this backup server is at our ISP and sends tons of spam to our server.

Where and how do I block this server to connect to our's?

I have followed this guide:
I guess its the last settings that need to be configured in my case. But hey! Thats a question for the forum to be asked :p

Regards

Ben
 
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