Re: New to exchange - Mail relay
From: Andrew (andrew_at_sdfghjk.com)
Date: 12/02/04
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Date: Thu, 02 Dec 2004 18:23:34 +0000
On 12/1/04 3:56 AM, in article olfqq0tp7sa9krgms25l581g4k0e9vdo23@4ax.com,
"Rich Matheisen [MVP]" <richnews@rmcons.com.NOSPAM.COM> wrote:
> Andrew <andrew@sdfghjk.com> wrote:
>
> [ snip ]
>
>> Would you agree with this plan? I pit postfix in the DMZ then exchange in
>> the LAN.
>
> Yes.
>
>> I create users on the postfix server ....
>
> Create users? Why? You might want to use the relay_recipients_map and
> put the valid SMTP addresses in there, but you should automate the
> updating of the file that contains them. If you don't you'd have to
> remember to add any new addresses by yourself.
>
>> As for the cost of licences I work at a school so the cost of licences is
>> minimal around $50 a year for one exchange.
>
> It's $0 a year for postfix. :)
Hi,
I followed what I believe to be the instructions on the previous post
http://postfix.state-of-mind.de/patrick.koetter/mailrelay/
but am still failing miserably.
My network is 192.168.1.0/24 and my DMZ is 192.168.2.0/24. The domain is
called test.local and I have a domain called "domain.com"
I have a machine in there with postfix on in there with the ip set to
192.168.2.200, it can surf the internet etc. I have taken the firewall of
the machine to rule out that is not causing the problem.
The DMZ allows access to:
TCP ALL 25 192.168.2.200 25
TCP ALL 110 192.168.2.200 110
I don't think this is problem as I have put a mail server in there on it's
own and it can send and receive internal and external mail no problem.
If I bring the postfix machine into the LAN side and give it an IP in the
192.168.1.0/24 range I can send through it, using the domain.com that I
changed using the UPN suffix and I know this is working because it shows
where it came from in the headers.
But when I change the IP address to 192.168.2.200 and stick it back outside
in the DMZ nothing. I change the IP address of the SMTP connector to
192.168.2.200 and nada? I can ping the machine ... But can not route an
external email through it.
I changed the mynetworks = section in main.cf of postfix to both
192.168.2.0/24 and 192.168.1.0/24 but nada? I have put in the relay_domain
section as domain.com and mail.domain.com but ..?
Where am I going wrong is it something to do with the authentication on the
exchange or is it the relaying on postfix. Is it a little bit of everything?
All help appreciated I'm pulling my hair out.
Andrew
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