>does that mean double in mail traffic?

At least 150% more traffic
100K more mailboxes / users.

>Dedicated Postfix server for outgoing mail ( * 2)

>just extrapolate for the traffic you have now, where you 2 MX and 1 
>outbound gateway.  are those machines overloaded?  I'm not sure you
have to 
>change from what you have now.  you could pump them up a bit:

Inbound will be fine once I dedicate the current outbound box to inbound
only.
It's the outbound / ETRN that takes all of my resources.
My thought was 2 TigerDirect type servers dedicated for this task.
Just not sure of the config...

>1. go from 512 MB to 1024 MB, allowing for more simultaneous processes,
and 
>for running BIND8 on each machine.

Already did that.

>2. add a second SCSI caching controller with RAID1 disks to handle the 
>posfix mailqueue

ok

>Dedicated Postfix server for anti-virus ( * 2 )

>same here, more RAM and added disk + caching controller.

My thought was to have a second box to be able to balance the increased
load.


>Dedicated iMail server for 25k users.

>ah, this totally different question, esp if you have a lot of webmail 
>users, which might cause you to need 2 GB and 2 GHZ cpus for the
compute 
>load. However, the disk channels would get exactly the same treatment
as 
>the SMTP gateways:  more controllers, + caching, segregate imail queue
to 
>its own partition and separate  from the mailbox disk(s).

Processor of the day ofcource, what I need are the drive configs
Can you define for me the config:
        Controller suggestion / RAID type and what channels are
connected to 
        which drives.

Thanks
Joel


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