Am 01.02.2011 17:51, schrieb Frank Bonnet: > On 02/01/2011 05:43 PM, Victor Duchovni wrote: >> 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. >> > There is a mysql proxy software , maybe it could help to authenticate > users from both databases ? > > http://forge.mysql.com/wiki/MySQL_Proxy
What about using only one mysql-server and the other one as replication slave, postfix is readonly So you would have the backend which writes to the master and the load from the smtp-servers is spread and as benefit if the master dies there is a additional backup
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