IIS and SMTP - Server architecture

Author

Server architecture

yonido@gmail.com

2006-08-22, 7:30 am

Hello, i've developed a service that receives e-mails, process them,
and forward them to users.

The service should be open to internet users, and every user can create
an account for free.

These messages contain attachments and therefore pretty big
(videos/slides/etc).

I expect about 100,000 users.
Assuming that every user will receive about 10 emails, 2mb each - whats
the best server architecture? how many servers do i need? is one
enough?

I'm a programmer and i am new to this world of architecture. Thought of
2 w2003 servers in nlb.

any help?