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somebody are spoofing our emails

Posted on 2009-04-14
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Last Modified: 2013-11-16
we start receiving emails with our own email address, what is the steps to stop and prevent it?
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Question by:RM_PY
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by:Toni Uranjek
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Hi!

You should create SPF record for your domain and enable sender ID filtering. Which mail server do you use?

"Sender ID Framework SPF Record Wizard"
http://www.microsoft.com/mscorp/safety/content/technologies/senderid/wizard/

HTH

Toni
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by:RM_PY
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Thanks toniur....I use MS Exchange
Will try with the SPF record
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by:Toni Uranjek
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Which version of Exchange do you use?
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by:RM_PY
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O.S. = Windows Server 2003 R2 STANDARD SP2

MS EXCHANGE =

Exchange System
Microsoft Corporation
Version: 6.5.7638.1
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by:Toni Uranjek
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If you are using Exchange 2003 SP2, check this article. It explains how to configure sender id filtering:

"Configuring and enabling Sender ID filtering in Exchange 2003 SP2"
http://www.msexchange.org/tutorials/Configuring-enabling-Sender-ID-filtering-Exchange-2003-SP2.html
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by:RM_PY
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I am not sure if we have the SP2 installed in the MS Exchange.......

It Just say :

Exchange System
Microsoft Corporation
Version: 6.5.7638.1
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Toni Uranjek earned 500 total points
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I have SP2 installed on my Exchange 2003 server and its version is same as yours.

Just check if you have all configuration options from article available on your Exchange. You should configure mode of Sender ID filter to "Reject" if you configure your SPF record correctly.
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