>- many domains (maybe 5,000-10,000)
that's a lot of domains. I know can handle 1000 mail domains, but
I'm sure others have gone above 1000, but up to 10,000 on one
Imail, I don't know
>- many users (prob. 100,000 users)
that's very doable with Imail, and there are many Imail systems with
over 100K accounts. But if you're looking at exclusivey or
predominantly using webmail, you will need a very powerful machine
and big memory.
>Where can iMail store its
>Domain data
domain data is local to each Imail server, in the registry
>, and Users data?
user accounts can be stored in Imail registry, NS/W2K user list, or
in an external ODBC database, usually SQL Server, but I've heard
MySQL has been used. I don't know whether MySQL would hold up to
100k users doing authentification. I've heard its better for the
small/medium volume systems. 100K users could mean 10K to 15K
connected at one time. That's lot of database access for authentication.
>I need the mail server to scale, and I find
>MS Access too fragile for my comfort.
yep
>Currently, using Mailmax, but not comfortable
>with their MS-Access backend - too fragile.
Is that the only user database they offer?
>plus they store their messages references in
>the MDB file - makes it bloated real fast.
whoa, that's dumb. All the major mail systems I know write the
mailboxes to local file system, not to a database manager.
>Hopefully, I don't need to use MS SQL (too
>over-kill)...
you can use Imail's internal database, if you don't need an external
user database for other reasons.
>I need to use CGI/Perl to maintain the domains/users
>database - is this difficult with iMail?
there are 3rd party add-ons available.
>Most users will be on web-based email.
This is where 100K web mail users will need a very powerful mailbox
server, tons of memory.
>I'd appreciate if current users can give some
>honest inputs with regards to this.
You should not ask one machine to do all that work. I suggest Imail
as the webmail/mailbox server and the free IMGate add-on
machine(s) (see my sig) as the mail hub sending/receving SMTP with
Internet, off loading significant work from Imail, which can
concentrate on webmail and mailbox services.
Len
http://BIND8NT.MEIway.com : Binary for ISC BIND 8.2.3 for NT4 & W2K
http://IMGate.MEIway.com : Build free, hi-perf, anti-spam mail gateways
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