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The short answer is yes it is doable but it won't be easy, it is not exactly out of the box configuration<br />
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1. Exchange in itself does NOT support sender domain based routing you will need to do your own code to support this <br />
<a href="http://grahamhosking.blogspot.com/2011/05/exchange-2007-2010-sender-based-routing.html" rel="ugc">http://grahamhosking.blogspot.com/2011/05/exchange-2007-2010-sender-based-routing.html</a><br />
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2. You will need to find a way in this code to grab the source IP you want for the corresponding domain<br />
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I know I am not giving you the full answer but I am telling you it is doable and showing you how I never did it :)
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This led me to two different solutions. &nbsp;They got me the perfect answer thank you. &nbsp;great direction. &nbsp;<br />

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We have exchange 2010 set up on server 2008 enterprise. &nbsp;We host this for approximately 20 school districts. &nbsp;We have a problem when one district does something &quot;silly&quot; like giving out their password. &nbsp;That the SPAM storm then affects everyone since we are only using one outbound ip address. <br />
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I would like each domain to use their own address that will not affect others. &nbsp;<br />
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Is this possible with exchange? &nbsp;And how do you do it? &nbsp;<br />
Thank you,<br />
Scott<br />

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We have exchange 2010 set up on server 2008 enterprise.  We host this for approximately 20 school districts.  We have a problem when one district does something "silly" like giving out their password.  That the SPAM storm then affects everyone since we are only using one outbound ip address. 

I would like each domain to use their own address that will not affect others.  

Is this possible with exchange?  And how do you do it?  
Thank you,
Scott


The short answer is yes it is doable but it won&#39;t be easy, it is not exactly out of the box configuration

1. Exchange in itself does NOT support sender domain based routing you will need to do your own code to support this 
http://grahamhosking.blogspot.com/2011/05/exchange-2007-2010-sender-based-routing.html

2. You will need to find a way in this code to grab the source IP you want for the corresponding domain

I know I am not giving you the full answer but I am telling you it is doable and showing you how I never did it :)

This led me to two different solutions.  They got me the perfect answer thank you.  great direction.  


Multiple domain on exchange 2010 but want each domain to send using a unique IP address

We have exchange 2010 set up on server 2008 enterprise.  We host this for approximately 20 school districts.  We have a problem when one district does something &quot;silly&quot; like giving out their password.  That the SPAM storm then affects everyone since we are only using one outbound ip address. 

I would like each domain to use their own address that will not affect others.  

Is this possible with exchange?  And how do you do it?  
Thank you,
Scott


Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

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