Exchange 2010 SMTP Receive Connector

I created a Receive Connector for SMTP (Internal Relays) on our Exchange 2010 Server named SMTP_Relay.

I modified the properites for SMTP_Relay connector under "Permission Groups" to allow :
Anonymous users
Exchange users
Exchange servers
Legacy Exchange Servers.

I noticed that the "Default HT" Connector has different permissions allowed under "Permission Groups".  

 Will that make a difference on the changes I made to my new connector SMTP_Relay?
JimmyRiversideEmail AdministratorAsked:
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Cris HannaSr IT Support EngineerCommented:
What exactly are you trying to relay and it will make it easier to assist.  You have to be careful not to turn the Exchange Server into an open relay.
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Jamie McKillopIT ManagerCommented:
Hello,

Please follow these instructions to create a receive connector to allow internal systems to relay. The instructions are for Exchange 2007 but they apply to Exchange 2010 as well.

http://blogs.technet.com/b/exchange/archive/2006/12/28/3397620.aspx

The Default receive connector does not allow relaying. You need to make sure you scope your new receive connector to the IPs of your internal systems or you will end up with a receive connector that will allow any system on the internet to use your server as a relay.

-JJ
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JimmyRiversideEmail AdministratorAuthor Commented:
We are trying to relay emails outside of the company by an automated process.
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Cris HannaSr IT Support EngineerCommented:
Ok so you have a piece of Software running that generates emails which you want to be sent out by the Exchange server?

Does this software run on the same box as the Exchange Server?
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JimmyRiversideEmail AdministratorAuthor Commented:
No.  Programmers are using Cold Fusion to setup the automated process on another server.
Sometimes it works with no issues other times some mail gets returned with no NDR.
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Cris HannaSr IT Support EngineerCommented:
is the other server with in your local domain?
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Jamie McKillopIT ManagerCommented:
Your problem is that you haven't scoped the the new send connector so you are randomly connecting to the default connector and are unable to relay. Follow the instructions I linked to created the relay connector properly and you will be all set.

-JJ
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