Upgrading our mail server

[Frank Bonnet]

Hello

Our mailhub is actually a HP DL360 with one processor (Xeon 2.8 ghz)
with 2 Gb RAM and 120 Gb disks, it is 3 years old.

It runs Postfix + imap + imaps + pop3 + pop3s + squirrelmail + vexira antivirus + postgrey
and some small auxiliary services.

We have approx 2500 users / mailboxes and the machine is often really loaded

So I decided it is time to purchase a new server and I need some feedback from
admins that could help me to choose a new hardware system that could runs like
a charm with FreeBSD 6.1 ?

I need SCSI Disks of course , budget is around 10K$

TIA
-- 
Cordialement
Frank Bonnet