Hardware issue on 1 000 000 mail a day

[Egil Fujikawa Nes - Webdeal AS]

Hi
 
We are planning to buy new hardware to our Mailscanner system. Today we
have two P4 2,2 GHz with 512 MB memory and normal 200 GB IDE harddisk
drives. We are only running Mailscanner with all the modules and F-prot
antivirus on these servers. Normally we handle 25 to 35 k with mails
everyday without any problem. The servers are located on two different
locations in Norway and host around 1000 domains together. It is 500
with each server as primary MX and the other as secondary. This system
is working very well, if one server is down the other one is taking all
the mail and normally it is not more then 4.00 in load on the server and
2 minute mail queue. We are running everything on FreeBSD 5.2 and
Postfix.
 
What we have seen more and more often is that we (or our customers) are
getting flooded by spam. Yesterday we got almost 1 000 000 spam messages
from more then 50 000 IP addresses. This is a big problem and our
servers are working and working but it take long time to process
everything. We normally stop mail with header_check in postfix when this
happen, but this time we know that it also was coming was very important
for the customer so we couldn’t stop all the mail for this domain buy
header_check.
 
Lately we have been using many Dual AMD Optiron servers that works very
well on many things, but we have also some problems with some
applications like frontpage extension and some PHP accelerators. Have
any body experience with FreeBSD and Mailscanner on amd64 systems ? And
where should we put the money on the hardware. Disk, memory or CPU ? I’m
interested to hear from other that face the same problem, how do you
solve it ?
 
 
Best regards
Egil Fujikawa Nes

WebDeal AS - Teknologiveien 22 - 2815 Gjøvik - NORWAY

Phone: +47 61 13 16 50 - Fax: +47 61 13 16 51
E-mail: post at webdeal.no - URL: www.webdeal.no <http://www.webdeal.no/> 


 
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