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by exarch_666_

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Hello,

A few days ago I received an E-mail from a ghost user of my domain. This user doesn't exists on my Exchange Server but his adress was from my domain. If I reply the message, this reply arrives to him. How is it possible? Is this spamming??? What can I do?

Thanks

3 replies

by larcat

Maybe the user is hidden!

In Exchange Administrator click on "View" then "hidden Recipients". See if the user is in there.

by rfraysier

In Exchange Administrator, connections, Internet Mail Service (properties), Routing, Routing Restrictions, check the first option (Hosts and Clients that successfully authenticate). That should take care of the problem.

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