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Re: Debian and FQDN lookup

Quoting Brian (ad44@cityscape.co.uk):
> On Fri 03 Apr 2015 at 14:29:49 -0600, Bob Proulx wrote:
> > Brian wrote:
> > > Bob Proulx wrote:
> > > > The debian-installer will set things up right with an entry such as
> > > > this one.
> > > > 
> > > > foo.example.com foo
> > > 
> > > If 'Domain name' is blank you get ' foo'.
> > 
> > Ah, yes, I had left that out.  We had discussed that point in a
> > previous email.  However I don't think the domain should be left blank
> > for the installer.  Certainly not for an email server.
> > 
> > One of these days we should get together and create or update a
> > documentation page with all of the information on this topic all in
> > one place.  :-)  But there is already the fine Debian Reference
> > maintained by Osamu Aoki.  All it takes is time and that seems in less
> > supply every day.

I agree. I think I may have stumbled on the same or a similar
discussion regarding foo   and I tried making changes
accordingly. The result of one of these was that I got a message about
my MTA, hostname and --fqdn so I reverted to having
# foo foo.home foo

And I vaguely remember having problems when I moved a machine from
work to home and had to change all the networking parameters:
finding them all and knowing what to change them to. Files like

> Every time I use d-i in expert mode I wonder what other people make of
> it. I was puzzled by it the very first time and even now think it is one
> of the most difficult fields to fill in because the background knowledge
> needed isn't immediately as apparent as it is with language or location,
> say. The installation manual is really of no help as it has little
> commentary on its significance,
> As an example, let us suppose your ISP in the UK is talktalk.co.uk. You
> put this as your domain name because that is all you can think of. After
> all, it is in your email address and you do not have your own domain.
> Your hostname is copernicus. So your canonical hostname becomes
> copernicus.bt.com, which doen't exist and doesn't resolve. Now - what
> harm is done? Leaving the field blank often gets you what your router
> provides; copernicus.lan in my case.
> The Debian Reference doesn't appear to have anything to say about domain
> name either.

I'm one of the many who use .home
and this paper points out that there's an awful lot of leakage onto
the Internet.

I think I/we ought to be using .local
because this won't get onto the Internet.

Do you think there's time to get such advice into jessie's installer
for domestic users (assuming it's good advice)?


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