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Problem sending e-mail to certain domains from SBS 2008 Exchange 2007

Posted on 2009-04-12
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Last Modified: 2013-11-30
I receive the following error when I try sending to a certain ISP (ptd.net) #550 5.1.1 RESOLVER.ADR.RecipNotFound; not found ##  
I am not sure where to start to try to fix this problem.  
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Question by:jeffreychorba
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by:Veerappan Sundaram
ID: 24129183
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by:jeffreychorba
ID: 24167100
I looked at both articles in the above post and neither of them apply?  Anyone else have any idea?

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by:jeffreychorba
ID: 24181757
Looking for some help on this topic!
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jeffreychorba earned 0 total points
ID: 24775903
Found problem to be I needed reverse DNS setup
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