On Mon, Oct 02, 2000 at 12:45:51PM +0200, Luka Gerzic wrote:
> on both servers with extra 3com 100mb/s cards and make them conected with
> twisted cable (direct connection), so both servers are conected with
> 2 eth. cards.
Why did you do this? Performance? Security? What's wrong with them
talking to each other on the same network as the router is connected
to (presumably they all share a single switch of some sort). What makes
you think they need to talk to each other at all?
> 1. can i make somehow server balancing with qmail?
Yes, but in general it's probably better to design your load balancing
solution before putting your network in place.
In any event, you need to be much more specific. Balancing what exactly?
Inbound SMTP? Local mail delivery? User access via POP/IMAP? Outbound queues?
In general your big question will be where you finally store the incoming
mail for local users. Whatever that storage system is, it needs to be
available to both (or all your mail systems). Typically people run a
high-availability NFS solution, such as netapp.com. In such cases,
multiple servers (such as your mx1 and mx2) don't need to send traffic
to each other at all! So there is no need to have a special network
for them.
Sometimes a much simpler solution is to partition off the different
functions. Eg, place POP access on one box and SMTP access on another.
It doesn't give you redundancy, but it does balance resources somewhat.
Regards.
