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Whatever you do, the emails will come to your network, your IP. If you change the MX records to reroute the mails to somewhere else, it will reroute all emails.
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Thank you Rajith, &nbsp;your response is understood. &nbsp;Yes, our MX record will drive the traffic to our Exchange Server, we are ok with that. &nbsp;Challeng once the message has arrived at Exchange we would like to reroute it. &nbsp;Bandwidth is not our issue.
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not if you use a dns round robinning technique with multiple MX records for the domain.. this should allow them to be split
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Thanks DocCan11, however, the DNS approach is not smart enough to reroute a specific email address - we want the MX traffic to go through Exchange because a majority of the exchange addresses will most likely be corporate users. &nbsp;We have a specific email address that we want to store else where (it could be another Exchange Server) or another SMTP server.
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We currently utilize Exchange 2003 on a Dell 6650 (Quad Processor) with 8Gig RAM. &nbsp;We are about to launch a marketing campaign, which will result in between 10,000 and 20,000 responses in four to five day period. &nbsp;These responses will be accompanied by a 2Mb attachment. &nbsp;Would anyone know of a technique based on a specific email address reroute messages out of exchange? &nbsp;The marketing department will not allow us to use a different domain for responses  it must remain example@company.com. &nbsp;There will be no benefit to the organization to keep these messages in Exchange long term, the window of value is extremely limited so our approach was to reroute these message to an OPEN Source SMTP, which can save off the attachments to a file system on the SAN. &nbsp; 
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We currently utilize Exchange 2003 on a Dell 6650 (Quad Processor) with 8Gig RAM.  We are about to launch a marketing campaign, which will result in between 10,000 and 20,000 responses in four to five day period.  These responses will be accompanied by a 2Mb attachment.  Would anyone know of a technique based on a specific email address reroute messages out of exchange?  The marketing department will not allow us to use a different domain for responses  it must remain example@company.com.  There will be no benefit to the organization to keep these messages in Exchange long term, the window of value is extremely limited so our approach was to reroute these message to an OPEN Source SMTP, which can save off the attachments to a file system on the SAN.   

Microsoft Exchange 2003 advanced Routing techniques based on email address

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.