Exchange smart host configuration help

I am needing to configure our Front End Exchange server to forward all outgoing mail to a 3rd party filtering solution.

Our current setup is:

4 back end server
1 front end

All outgoing mail is sent to the front end via SMTP connector with front end listed as the local bridgehead.

In order to use the 3rd party as a smart host, where do I enter their mail server info?  There are two different places I can see to enter the smart host:
A.  in the existing smtp connector -- "Forwar all mail through this connector to the following smar host"
B.  under the front end server, Default SMTP Virtual Server there is an Advanced options under Delivery to enter a smart host.


If Option A is used, how does this affect the back end servers routing internal mail to each other?

thanks.
brett_apfcAsked:
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futurefilesCommented:
front end server
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deroyerCommented:
Since you are wanting to send all email outbound what you need to do is modify or create a routing group connector accordingly:

Select the Administrative Group...  Routing Groups... Connectors...  (Modify the existing SMTP connector)  
General Tab... Forward all mail through this connector to the following smart host and add all of you frontend servers as Local Bridgeheads...
Address Space tab...  Add SMTP address * with a cost of 10

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brett_apfcAuthor Commented:
deroyer -- forgive me if I misunderstood your comment.

I don't necessarily want all email heading outbound.  I want to retain any internal email inside our domain.  I ONLY want external email to head out to the 3rd party filter.

currenlty, my front end server is listed as the local bridghead.  If I select the option to forward all mail to the smart host, will internal email be sent out to the 3rd party as well?  This would not be desired.  Only external mail should be forwarded to the smart host.
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deroyerCommented:
No internal mail doesn't travel over the SMTP connectors.  You have an internal DNS and AD environment so all mail addressed to your domain just jumps from exchange server to exchange server and never leaves your internal environment.  Now anything addressed to anything but your domain will require a DNS lookup and will be routed through your smarthost who will do the lookup and send it accordingly.
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brett_apfcAuthor Commented:
Thank you.  I will be attempting this over the weekend.  I'll report back on Monday.

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brett_apfcAuthor Commented:
thank you for your help.  This worked perfectly.
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brett_apfcAuthor Commented:
Changes were made as described above by deroyer, and everything appears to be working as planned.

thanks for the help.
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deroyerCommented:
no problem glad I could assist.
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