Exchnage 2010 user impersonation

if the account is going to send using smtp, I would just create an smtp connector that allows the internal IP range, or that specific machine to be able to send.
if you google instructions for allowing copiers/scanners to be able to send you will find detailed instructions on how to do this.

No it's going to use exchnage. It's for CRM 2011 email router. It uses a system account and needs to be able to impersonate the CRM users so it can send emails.

http://support.microsoft.com/kb/2015567

http://stackoverflow.com/questions/13564681/dynamics-crm-2011-e-mail-router-capabilities

http://blogs.msdn.com/b/crm/archive/2009/12/21/how-to-configure-microsoft-dynamics-crm-4-0-e-mail-router-on-premise-with-microsoft-exchange-server-2010.aspx

http://msdn.microsoft.com/en-us/library/exchange/bb204095(v=exchg.140).aspx

or I might be tempted to configure the crm service to start with a domain user account, rather than local system account, and then make sure that account has send as permissions.

I've seen all 3 of those and I just can't seem to get it going. The 1st article from MS links to an article that shows how to set the service account to have impersonation abilities, but I think it's the service account for the exchange server I need to set it for the service account on the CRM server where the email router is.

or when you give the user the rights choose the user in the form  CRM-SRV-2K8R2\systemaccountname

Holy %*!&# it worked. Thanks!