I've installed vpopmail/sqwebmail/courier-imap/qmailadmin on a small system
(< 200 users spread over ~40 domains) and it works like a champ and I love
it.
I'm working on a project for a large client, and I've got them willing to
look at a qmail/vpopmail/sqwebmail/courier-imap/qmailadmin solution instead
of outsourcing their e-mail, so I've got a couple of questions.
They currently have ~1,000,000 (yes, 1 million) mail boxes and growing
spread over ~30 domains. The biggest single domain has ~400,000
users/mailboxes. As new users get added, I have a feeling that the
rebuilding the cdb file for authentication is just not going to be
practical. Is MySQL with the --enable-large-site=y the best choice?
Is anybody running qmail/vpopmail with ~400,000+ users/mailboxes? If you
are, would you e-mail me privately with your platform (OS and hardware), and
any loadbalancing you may be doing?
TIA,
Dave Weiner
