From: Alan Munday (postfixbrightheadtechnology.com)
Date: Tue Jan 20 2004 - 09:48:05 CST

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> -----Original Message-----
> From: owner-postfix-userspostfix.org
> [mailto:owner-postfix-userspostfix.org] On Behalf Of
> Victor.Duchovnimorganstanley.com
> Sent: 20 January 2004 15:29
> To: Postfix Users List
> Subject: Re: Postfix and Exchange!
>
>
> What would be the point, either way the Postfix server makes
> the inbound
> connection. If the user is unwilling to allow Postfix to
> connect to port
> 25 on the internal network he is out of luck (yes he can
> deliver locally
> and set up a POP/IMAP server and have Exchange pull mail out of a POP
> mailbox, this will likely lead to forwarding loops and
> becoming an open
> relay since Exchange will likely forward the extracted mail to header
> recipients)...
>
> There is no solution other than allowing inbound port 25.
>
> --
> Viktor.

Unless you have a firewall which allows for timed rules.

But this would seem to be a bit much if you are going from DMZ to LAN.

Alan

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