Re: [EXIM] Exim as mail hub - how?

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Author: John Burnham
Date:  
To: Graham Leggett, exim-users
Subject: Re: [EXIM] Exim as mail hub - how?
> I would like to set up an exim server as a mail relay for all mail for
> our domain. I would basically like all incoming mail to the exim server
> (on the firewall) that is not addressed to a local recipient must be
> relayed to another smtp server (inside the firewall).
>
> I have tried adding a director at the end of the director list that
> passes all mail to the particular smtp server, but messages are being
> frozen because exim does not like the fact that the MX record for the
> domain points to it - the actual mail server is not visible from the
> internet.
>


Something like putting the director at the beginning of the list
with settings like:
foo:
transport=smtp,
driver=domainlist;
route_list = "spong.com internal.spong.com byname";

This will route all mail coming in to spong.com and send them to the 
host internal.spong.com - the byname is important. You can have 
byname (which just looks up the host name), bydns (which does a 
DNS lookup - full MX and A processing), bydns_a (looks up A 
records and fails if there are none) and bydns_mx (looks up MX 
records and fails if there are none). Check the domainlist router 
section of the docs.
 J.
--
John Burnham
jpburnham@???       


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