On Tue, Feb 01, 2011 at 05:33:14PM +0100, Ignacio Garcia wrote:
> Hi there. Hi, I've been googling around all morning and I'm
> completely ignorant on what I'm going to ask, so please forgive me if I
> make no sense. I have 2 independent servers running
> postifx+mysql+(other_things) all controlled from a nice web interfacce
> called ISPConfig3. Those 2 servers are completely independent with many
> domains configured in each of them. Authentication is done against each
> server's separate and different mysql database. I'm testing Perdition
> for imap and pop3 connections so webmail access is more
> consistent/unified, and in case of customers with email services in both
> servers, we make it easier for them since the proxy redirects
> connections to the right imap server. My question: is there such a
> similar product (SMTP proxy) that can be configured in the same way to
> hide the real smtp servers and
> deliver/accept_mail_from_our_2_different_pools_of_users using the
> correct server?
Well, the proxy won't know what to do before the user authenticates,
and you say the the authentication databases are split, so it is far
from clear how you expect this could work.
However, if Perdition presents a unified IMAP interface, you could
perhaps use an "rimap" backend with Cyrus SASL to authenticate the
user.
I am not aware of any SMTP proxies whose downstream SMTP server is
selected after user authentication. It is probably easiest to just
operate a unified submission server that authenticates the union of the
two sets of users, and then routes to the right server via sender-based
routing. In other-words, not a proxy but a store-and-forward MSA.
Postfix can do that.
--
Viktor.
