Hardware-spec suggestion?

Hi,

last months I’ve been busy setting up a working RT environment. Now the
time has come for the roll out. The idea is to set up two front-end
webservers and one database-server for RT.

Our estimation is that the system will receive about 10.000 emails per
day.

What kind of hardware do you suggest for the two web/mailservers and the
database server. Or does anybody has a better suggestion for an
alternative set-up?

Thank in advance.

Kind regards, Marcel