From: Noel Jones (njonesmegan.vbhcs.org)
Date: Thu Apr 01 2010 - 13:21:37 CDT

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On 4/1/2010 12:49 PM, Glenn English wrote:
> Is it possible to use postfix as a reverse proxy for my SMTP server?
>
> I think what I'm asking is does postfix do its UBE and protocol checks *before* it sends to a smarthost.
>
> If not, do you know of a way to reverse proxy SMTP? How about POP3 and IMAP?
>

It's fairly common to use postfix as an email gateway for
multiple internal mail servers. Here's a starting point:
http://www.postfix.org/STANDARD_CONFIGURATION_README.html#firewall

Other information on configuring postfix can be found here:
http://www.postfix.org/documentation.html

You can use dovecot as a IMAP/POP3 proxy, more info here:
http://dovecot.org/
http://wiki.dovecot.org/HowTo/ImapProxy

   -- Noel Jones

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