Windows Fax Server

I've got a Dell 3115cn Multifunction Laser Printer.

It is capable of faxing straight from the printer, but because of the amount
of faxing that our company does, im trying to setup a fax server...

Here's the issue...we're running Windows Server 2003 Standard R2. Our email
server is not local.

Would i have to have the place that's hosting our email setup the fax server
on their end or is there a way for me to do it on my end, locally?

Thanks for the assistance.