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Can I Turn Of Non Delivery Reports for Exchange 2007 Internet Email?

Posted on 2009-04-08
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Last Modified: 2013-11-30
Unfortunately my domain is getting ton of spam lately.  Many of the emails are sent to people that don't even exist within my organization.  As a result, I get hundreds and hundreds of NDR emails saturating my outbound queue.  I would like to disable NDR's all together, but this post states that I will get black listed:

http://www.experts-exchange.com/Software/Server_Software/Email_Servers/Exchange/Q_23404114.html

Is that really the case?  Is there something else I can do to avoid this problem?  My internet connection is literally dominated by these connections and I am starting to see an effect on my ability to connect to the internet.  When I shut down my "Exchange Transport" service, everything goes back to normal.  Obviously that is not an acceptable long term solution.

Is there any way I can just explicetly deny emails that aren't addressed to someone in my AD?

Thanks in advance.
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Question by:ged125
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Mestha earned 2000 total points
ID: 24102390
You need to enable recipient filtering. It is part of the antispam functionality.
http://www.amset.info/exchange/filter-unknown2.asp

Emails sent to known recipients will then be rejected at the point of delivery.

Simon.
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by:ged125
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Thank you!
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