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Re: POSTFIX/DMZ/EXCHANGE - I'm a little clearer now!

From: Andrew (jasari_iyahoo.com)
Date: Sun Dec 05 2004 - 08:31:26 CST

--- Magnus Bäck <magnusdsek.lth.se> wrote:

> On Sunday, December 05, 2004 at 14:25 CET,
> Andrew <jasari_iyahoo.com> wrote:
>
> [...]
>
> > In short what I would like to use postfix as what
> I understand to be a
> > mailrelay. That is I would like to use the postfix
> machine to sit in
> > the DMZ and receive mail for the users already
> with exchange accounts.
> > Can I have it that the mail sits on the postfix
> machine until the
> > exchange mail pulls it down?
>
> Mail sits on the Postfix machine until Exchange is
> ready to accept it
> via SMTP, which typically will be instantly.
>
> > At present I have a user called testmydomain.com,
> I can send an email
> > to him and the email sits on the postfix machine.
> How can I have it
> > that the user test on the exchange pulls that
> message down from
> > postfix? Is that possible? Is there a how-to? I
> do not want to open
> > up pin holes in my DMZ for this to happen? Is
> there a better way of
> > doing this?
>
> Add your domain to relay_domains and use
> transport_maps to direct
> messages to the Exchange box. Make sure you set up
> proper recipient
> address validation.
>
> mydomain.com relay:[exchangehostname]
>
> http://www.postfix.org/postconf.5.html#relay_domains
>
http://www.postfix.org/postconf.5.html#relay_recipient_maps
>
http://www.postfix.org/postconf.5.html#transport_maps
> http://www.postfix.org/transport.5.html
>
http://www.postfix.org/STANDARD_CONFIGURATION_README.html#firewall
>
> --
> Magnus Bäck
> magnusdsek.lth.se
>

Does the transport map not mean that email is
forwarded on to my exchange server as opposed to the
exchange server collecting the mail? Sorry to ask so
many questions but I've had a read of a postfix book
and thats what I gather from that.

Thanks

Andrew

                
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