From scratch - I have a requirement to centralize all my user's mail to one (active/passive cluster) Microsoft Exchange 2003 Server in the United States.The second requirement is that all mail (headers etc.) must appear to be sent from their originating countries.For example, mail sent from a user in South America must appear to come from a server in South America. All mail originating from the United States must appear to have been sent from the United States and so on.Is this possible? If so, can anyone point me in the right direction?Thank you for your time in advance!!!Adminicrator

Do you currently have different mail domains for your geographically diverse users. ie user@na.company.com user@sa.company.com if you are currently set up this way is should be no problem to consolidate to a single mail server as you could use a single server authoritative to the various sub domain addresses. Just take some MX work and if you plan to use auto email address generation with AD you'll need to tweak that some too.

Thank you for the response!!Yes different domains, actually it would appear more like thisuser1@123.com in America and user2@xyz.com in South America.Would I need to set up a smart host (or possibly a bridgehead server) in each location so that mail will appear to come from those locations?

We have hardware in place that is running (non-exchange) SMTP to receive and send mail.Do we actually need routing groups or just SMTP connectors (based on address space?)This is all in a single domain/forest...just multiple internet domains.Please check this thread for more details. Thank you!!!http://forums.microsoft.com/TechNet/ShowPost.aspx?PostID=2358525&SiteID=17&mode=1

OK here is how to accomplish this:***IMPORTANT*****DO THIS AT YOUR OWN RISK - test in a lab first as we have done.This will not work for multiple domains for a single user.for example:This WILL NOT route out a specific connector:JOE@XYZ.COMJOE@ABC.COMbutThis WILL route out a specific connector:JOE@XYZ.COMJOE1@ABC.COMSo in this scenerio I want JOE@XYZ.COM to deliver out to the internet as usual and I want JOE1@ABC.COM to go to a special SMARTHOST1. Add (CheckConnectorRestrictions and set it to 1) DWORD registry entry to this key: HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Resvc\Parameters*note: we rebooted after this step2. Create Two (or more) SMTP Connectors (ADDRESS SPACE on both set to *, same cost is fine)3. On the SMTP connector (that will handle normal internet mail) click the "Delivery Restrictions" tab and set to:"By default, messages from everyone are: ACCEPTED"also click "ADD" under "Reject messages from:" and add JOE1@ABC.COM4. On the SMTP connector (that will handle mail you would like to forward to a special SMARTHOST) click the "Delivery Restrictions" tab and set to:"By default, messages from everyone are: REJECTED"also click "ADD" under "Accept messages from:" and add JOE1@ABC.COM5. Issue IISRESET from a command prompt