[Sunhelp] ?: Mail server capacity sizing for 10,000 clients

[Wonkyu Chang - Sun Korea SE]

Hi experts,

Now, I'm make up the proposal of mail server which will service for 10,000 
clients. But, my customer asked me the server capacity sizing with E3500.
Could you let me know where to get it about the disk, memory and cpu capacity 
sizing for mail service?

Thanks for any idea.
WK Chang