----- Original Message -----
> From: "Thomas Eckardt" <thomas.ecka...@thockar.com>
> To: "For Users of ASSP" <assp-user@lists.sourceforge.net>
> Sent: Monday, January 25, 2016 12:30:11 PM
> Subject: Re: [Assp-user] ASSP Support Domain-based Email Routing?

>>I'm wondering if ASSP has a feature called "domain-based email routing".
> 
> in short - NO.
> 
> Why? Because ASSP is a proxy not a mail server.
> 
> Internet mails <-> ASSP (SMTP Proxy) <-> Email Server
> 
> This not only shows the mail flow - it also shows the IP connections. How
> should switch assp the IP connection to another mail server in the middle
> of the SMTP handshake (after RCPT TO) or even more hard to do - after the
> mail header (TO:) is received? In this example the "Email Server" has to
> do the "domain-based email routing" to "Email Server1","Email Server2","
> Email ServerX".

Thomas:
Thanks for your detailed explanation.

I'd like to share my success ASSP deployment that has the feature "domain-based 
email routing":
Inbound Connection:
Internet mails -> Postfix-1 (SMTP Gateway) -> ASSP (SMTP Proxy) -> Postfix-2 
(domain-based email routing enabled) -> Email Server1/2
=> I use the feature "multi instance" of Postfix for the feature "domain-based 
email routing", where as:
* Postfix-1 (primary instance): Accept all incoming messages from the Internet, 
then route them to ASSP
* Postfix-2 (secondary instance): Used for ASSP as the SMTP destination 
configured in ASSP
* Postfix and ASSP are running on same host on my System

Regards,
N. Thang

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