On Monday 05 January 2004 14:05, Rob Borland wrote:
> > Date: Sat, 3 Jan 2004 23:08:46 +0100
> > From: Christian Schmidt <ChriSchmiLi@???>
> > To: exim-users@???
> > Subject: [Exim] Re: Problem with exim on internal network
> >
> > Hello syn,
> >
> > syn uw, 03.01.2004 (d.m.y):
> >> We are running EXIM on Linux on an internal web server running on a
> >> internal private network (hidden by NAT). EXIM is only responsible for
> >> sending out mails from our webmail system. The problem that we are
> >> encountering is when we are sending mails to domains that are hosted on
> >> our server: EXIM does an MX lookup for a domain hosted on our servers
> >> and then gets the external IP address of that our server and not the
> >> internal address. I tryed to force this by entering our mail server
> >> host's internal IP in /etc/hosts but still it takes the external
> >> address.
> >
> > Yes, that's because the DNS lookup is done by exim: exim does _not_
> > only aks for the A record of your email server (its IP address).
> > What exim asks for is (probably) the MX record, i.e. your MTA wants to
> > know which server the DNS considers as your domain's Mail Exchanger
> > (MX).
> >
> >> Thus mails get undelivered as from the
> >> internal network it's not posible to use external IP addresses (that's
> >> how our OpenBSD firewall works).
> >>
> >> Does anyone have an idea ?
> >
> > Just define an additional router in your exim.conf that redirects mail
> > to <anyone@???> just to the corresponding machine.
> >
> > Just take a closer look at the exim specs, all you need is mentioned
> > there.
> >
> > Regards,
> > Christian
>
> I've been looking for exactly this function. I've read the specs but I
> can't find this described.
>
> I'm preparing to convert from sendmail where the following entry in
> mailertable routes to the host's A address rather than MX address:
>
> host.domain.example esmtp:[target.host.example]
>
> I'd appreciate it if you could give an example of how and where to define
> this router or a pointer to the docs which describe this.
>
> Regards,
> Rob
Just before your dnslookup router, do something like this
hub_route:
driver = manualroute
transport = remote_smtp
route_list = your.domain.net
HTH
Kiri
--
Christopher Chaduka
Technical Department
M-Web Zimbabwe (Pvt) Ltd
http://www.mweb.co.zw
