[Dovecot] MS Exchange IMAP Proxy

[Terry Carmen]

----- Message from Jerry <dovecot.user at seibercom.net> ---------
     Date: Wed, 30 Nov 2011 17:14:06 -0500
     From: Jerry <dovecot.user at seibercom.net>
Reply-To: dovecot at dovecot.org
  Subject: Re: [Dovecot] MS Exchange IMAP Proxy
       To: dovecot at dovecot.org


> On Wed, 30 Nov 2011 15:36:46 -0500
> Terry Carmen articulated:
>
>> I need to make the IMAP interface of an Exchange 2000 server
>> available on the net, however I would like to give it a little
>> protection, and believe Dovecot's IMAP proxy might be appropriate.
>>
>> Does anybody have a *really simple* config that would allow IMAP
>> pass-through to a single Exchange server?
>>
>> The examples I've seen all assume some sort of load balancing, which
>> isn't an issue here, so I'd like to eliminate the need for an
>> unnecessary database server.
>>
>> Does Dovecot do any cleanup of the IMAP commands that would be
>> useful in protecting Exchange (from this,
>> http://www.cvedetails.com/cve/CVE-2007-0221/ for example), or am I
>> barking up the wrong tree?
>>
>> If Dovecot isn't helpful for this, can anybody point me to a better
>> resource?
>
> An Exchange 2000 server is ancient. I wouldn't waste time with it
> unless there was no possible way to get an updated version; ie, Exchange
> server 2010.


The client won't pay for an Exchange update just to support a handful  
of external IMAP users.

It works perfectly well internally, using a Postfix relayhost.

Terry