Re: [Exim] Local MX / DNS.

On Sun, 4 Nov 2001, Matthew Byng-Maddick wrote:

> On Sun, Nov 04, 2001 at 03:01:34AM +0100, Jan Johansson wrote:
> > Ponder i want to run a domain on a local net without a DNS, how on earth
> > would i designate a MX? Answer is most likely " i cant". So, i assume i will
> > have to send mails to the FQDN of the mailserver, so it finds itself in
> > /etc/hosts? Or is there an answer i am missing? (Customer refuses to set up
> > a DNS for the local parts of the network)
>
> It depends if mail has to be eternally deliverable or not. If it does, then
> you can set an MX for the domain and, having accepted the mail, pass it to
> the local part of the network.

Eternally deliverable? :)

Hopefully Jan realized you meant externally..

Basically, if the 'world' (eg, the Internet) needs to be able to deliver
mail to this domain, there must be a DNS server set up listing a valid
MX record for it.

If this mail system is supposed to operate entrirely disconnected from
the Internet, then you can probably cruft together something that will
work without DNS - but why? The whole existance of "domains" is related
to "Domain Name Service".. Its like trying to operate a telephone system
without a telephone switch.

Now, nothing says you have to make this DNS publically visible,...

>
> MBM
>
>

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