Bill Shupp wrote:
>
> Is anyone using vpopmail with 20,000+ users (multiple domains), offering a web
> based client and allowing other POP clients? If so, what web-based client is
> being used, and what kind of hardware is being used? We're going to be setting
> up such a system for a customer, and I'm looking for any tips/advice that others
> can offer.
>
> Thanks,
>
> Bill Shupp
We have 41 domains and total around 250k accounts using .cdb to store
our users. Why we don't use mySQL is because it would kill the mySQL
database with the number of pop3 connections our users do.
It's a cluster with 4 nodes running qmail+vpopmail and 2 NFS servers.
Look at the attached 'dia' layout (the program 'dia' can be found at
freshmeat.net).
This is not a final layout, we already have plans to use LDAP to auth.
our users and decentralize our servers, but vpopmail's LDAP module is
not ready yet for it (ie: you can't create users or split them over
several machines/cluster of machines).
We used software, hardware and techniques from:
http://www.qmail.org/
=====================
qmail, daemontools, ucspi-tcp etc.
http://www.inter7.com/vpopmail/
===============================
VPopMail auth. module
http://www.inter7.com/qmailadmin/
=================================
Web based email administration
http://www.inter7.com/sqwebmail/
================================
WebMail interface.
http://www.linux-ha.org/
========================
High availability for linux.
http://www.linuxvirtualserver.org/
==================================
Load balancer ideas.
http://www.f5.com/
==================
BigIP load balancer.
http://www.ibm.com/
===================
4x Netfinity 4000R (2x PIII 750 MHz CPU, 512 Mb RAM, 2x9 Gb UW-SCSI HDD)
for the nodes
2x Netfinity 1000 (can't remember the specs - old recycled machines) for
the NFS servers.
http://www.inter7.com/qmail/
============================
For 24x7 support.
Best regards
Michael Boman
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mailcluster-structure.dia
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