Proposed system good enough for mailscanner?

[Richard D Alloway]

Hi all!

I'm new to this mailing list and am looking for your advice.

I've been charged with the task of finding an anti-virus/anti-spam
solution for our ISP.

We currently have 6 mail servers, each with 4000 to 10000 accounts.  I'd
like to set up a SMTP gateway server to handling all inbound and outbound
SMTP traffic.  The total SMTP traffic (inboudn + outbound) would be in the
order of 700,000 messages per day.

Which anti-virus software should I use for a service of this volume?

Does any have any experience with a system of this size?

I've currently spec'd out a server:

Dual Athlon 1600+ MP
1GB RAM
35GB RAID 5 (Ulta-SCSI 160)

I would be running Linux on this system.

Anyone have any thoughts or comments?

Thanks!

-Rich