[ubuntu-uk] Setting up mailserver

[Stephen Garton]

2008/12/28 Sean Miller <sean at seanmiller.net>:
> On Sun, Dec 28, 2008 at 8:58 AM, Ian Pascoe
> <softy.lofty.ilp at btinternet.com> wrote:
>> If I wanted to set up a file / mail server at home, and be able to connect to it through the internet, if the ADSL
>> connection is dynamic, how does the DNS server (I presume that's the only way of maintaining the link) know the
>> correct IP address to link to after the ADSL connection has been dropped and comes up again with a new IP
>> address?
>
> You can set up a dynamic dns service with various folks across the
> internet - what happens is that your server sends updates to the
> server to keep it informed as to what IP it is on.  From memory it's a
> cron job or something similar, running every 5 minutes or so.
>
> See http://www.dyndns.com/services/dns/dyndns/
>
>> I presume that if the servre was physically moved to a different location, it wouldn't matter as long as whatever
>> method satisfys the previous question, it would just re-connect itself and be off?
>
> Indeed.
>
> Sean
>
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I use ddclient (http://ddclient.wiki.sourceforge.net/ but installed
from the repositories) to update dyndns.

Steve Garton
http://www.sheepeatingtaz.co.uk