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I have a server resource problem, and need to take immediate action.
I have very fast disk available to this e-mail server: a 3-plex FC
mirror served by a SAN. 

But, the server is becoming CPU bound.  I believe that I have made
all the optimizations that I can make in qpopper: server-mode,
temp-drop-dir (in memory based FS), disable-check-pw-max, and
disable-any-kerberos-principal.

I would like to move the qpopper processes from my monolithic email
server (mail, it is a Sun E3500 6Gb Ram, 6 processor) to an adjacent
server to offload processing. I would accomplish this by manipulating
network traffic with a Level 2 switch.

The problem of doing this is of course file access to the spool
directory.  Everything that I have read is that Solaris 8 NFS (NFS 3)
doesn't properly safeguard against file corruption, and could result
in silently lost e-mail.

Is there a way that I can overcome this problem, and still off load
my processing to another server?  I do not currently have a Veritas
Cluster ( or similar ) license.  Although this may be the route I
proceed in the future, I need to buy some time to get me there.

Could you please offer suggestions / opinions regarding this
situation?  The impacted group (of the server's performance problems)
are out webmail clients, who see diminished throughput ( correlated
to the server's load average being high ) when the server is busy. 
This group uses IMAP, but is a high usage group.

I am looking to offload the POP3 traffic for two reasons.  First, it
seems to be simpler to address that offloading IMAP.  Second, large
mailbox users ( 50+ MB ) appear to spike CPU utilization on the mail
server.

Thank you in advance for your response.

Christopher Crowley
TIS Network Services
Tulane University
[EMAIL PROTECTED]
504.314.2535
PGP Key ID: 0x7CF18FDB

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