smtp server?

Archived from groups: microsoft.public.exchange2000.active.directory.integration,microsoft.public.win2000.setup_deployment (More info?)

Hi all

I am using exchange 2003 on windows 2003 on three different sites. I want to
introduce a SMTP server, on the headoffice to send and receive Internet
emails. I have to decide should i use Windows 2003 server with built in SMTP
component or should I add another Exchange 2003 site and use that as a smart
host? which way should i go and what is the recommendation?? what are the
advantages and disadvantages of using windows 2003 smtp or exchange server
as smtp. I send/receive around 10,000 mails per day? the requirements are
99% uptime.

regards
TIA