Am 10.01.2011 23:21, schrieb Jonathan Tripathy:
Hi Everyone,
Not really an issue directly related to postfix, however I'm sure I can
get some goods ideas here.
I wish to host managed email servers for some customers. Each customer
will have their own email server which will be an all-in-one virtual
machine running postfix, dovecot and some webmail suite.
Even though each customer will have their own server,
Will your maintenance costs explode?
cost for n customers =(( n virtual servers + 1/n host machine) x 2),
because you perhaps require HA for mail applications? + 1/n per proxy
I do not wish to
give each email server it's own public facing IP. I wish to avail the
use of proxy servers so all customers use the same public IP. As for the
"smtp-in" from the public internet, this isn't a problem as I can set up
many mx servers (using postfix of course) which will store-and-forward
the mail to the correct server (using transport maps). As for the IMAP
access from the customer, I was thinking of using perdition which is an
IMAP proxy - I believe that this will suit my needs.
I am confused however on what to use for the "smtp-out" proxy. The
customers will have to authenticate with their receptive email server,
however they will have to go via a proxy of some sort as they won't have
direct access to their server instance.
Do they require direct access to their server instance? As far as I can
tell from your description your proxies seem to solve all problems of
that kind.
It probably can't be a
store-and-forward proxy either.
Does anyone have any idea on what I could use here?
Many Thanks
