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Exchange smart host configuration help

Posted on 2008-11-07
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Last Modified: 2012-05-05
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.
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Question by:brett_apfc
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by:futurefiles
ID: 22908226
front end server
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deroyer earned 1000 total points
ID: 22908536
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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Author Comment

by:brett_apfc
ID: 22908587
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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Expert Comment

by:deroyer
ID: 22908784
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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Author Comment

by:brett_apfc
ID: 22908802
Thank you.  I will be attempting this over the weekend.  I'll report back on Monday.

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Author Closing Comment

by:brett_apfc
ID: 31514522
thank you for your help.  This worked perfectly.
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Author Comment

by:brett_apfc
ID: 22917455
Changes were made as described above by deroyer, and everything appears to be working as planned.

thanks for the help.
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Expert Comment

by:deroyer
ID: 22921089
no problem glad I could assist.
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