OT - Scalable email server solution needed

[robert]

On Sat, 2006-04-08 at 00:45 -0300, Duane Whitty wrote:
> Hi,
> 
> My appologies in advance for the OT post.
> This probably more appropriately belongs on ISP@ but
> there doesn't seem to be much traffic there.
> 
> To the point:  I'm about to provide hosting services,
> including but not limited to email, to a few local
> business.  Right now I have Sendmail configured
> and I was about to install Courier-IMAP.  My
> concern is future scalability.  I'm not sure sendmail
> is the right back-end MTA.  Right now Sendmail
> and Procmail will work fine I believe with the addition
> of an IMAP server.  But what about later on?
> 
> I was looking at DBmail but I'm not sure just how
> much activity that project has so I'm a little leary,
> but perhaps that's unjustified?  So now
> I'm considering Exim or POSFIX.  The Sun Java
> Communications Server looks appealing but unless
> I misunderstood I don't have anywhere near the
> bankroll for that yet and it doesn't look like a good
> fit for a start-up operation anyhow.
> 
> I like that POPular port and the way it uses proxies etc.,
> but it doesn't seem to support IMAP.
> 
> Is there anyone on the list who might be serving many
> business customers each with many users who would
> be willing to share their insights or opinions on this?
> 
>  From my past experiences, transitioning from a low volume
> solution to a high volume solution, regardless of the application
> domain, is usually best solved by making the right choice in
> the beginning.  It would seem like an important marketing
> tool as well.
> 
> If I am way of base here or missing something really
> important I'd appreciate the heads-up.
> 
> Thanks in advance for any help.
> 
> Sincerely,
> 
> Duane

Duane,

Have a look at qmail, It is very scalable and well supported with
various sites and mailing lists. Iv'e been using it for well over a year
now.

Sites:

http://www.lifewithqmail.org/
http://www.qmailrocks.org/
http://qmail.jms1.net/

Etc

Rob