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Date:      Mon, 04 Nov 2002 19:05:59 -0600
From:      Len Conrad <LConrad@Go2France.com>
To:        freebsd-isp@freebsd.org
Subject:   Re: qmail + 1 million users
Message-ID:  <5.1.1.6.2.20021104185046.026b3678@mail.go2france.com>
In-Reply-To: <63336.200.67.190.71.1036448254.squirrel@mail.unixmexico.ne t>

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>i have almost 1 million users and i am using qmail with vpopmail
>right now i have a compaq proliant 2 procesors p III and 1GB ram

what disk? how many disks?

>users have 2MB Quota but the servers is geting slow, and i am using almost
>all my swap partition (85%)

double your main ram to 2 GB.

>  what hardware do you recomend for this server
>and how can i balance the load on the server

I wouldn't replace that server's hardware as a first step, but rather I'd 
off-load SMTP in/out with internet from that machine to 2 separate machines 
as MX gateways.  This should free up a lot of mailbox server resources 
simply and quickly.

Plus with the MX's as anti-abuse gateways, you'd probably reject at least 
20% to 90% of incoming mail as spam.

btw, postfix has been tested faster than qmail for local 
deliveries.  :))  But I wouldn't horses now, you have archictectural 
improvements that will yield more.

>I am thinking on a dual xeon DELL poweredge 6600 with 6GB ram and two 73Gb
>SCSI

I guess you mean two 73 gb in RAID1 ?  or are you running 1 million 
mailboxes without mirrored disks?

You are probably suffering primarily from disk congestion.  No matter what 
MTA, you should have your mailqueue, mailboxes and logging on different 
drives and/or controllers.  Maybe send the logging to a separate log server 
to remove that disk i/o from the local disks.

Len


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