[ale] Looking for advise on domain names and other info wrt local network.

[Jim Popovitch]

On Sun, Aug 10, 2008 at 7:30 AM, Jim Lynch
<ale_nospam at fayettedigital.com> wrote:
> Like many of you, I have a local network with a half dozen systems.  I
> run a local bind server to make life a bit easier.  Arbitrarily I have
> called my local domain, the unique and imaginative "localdomain.org".

why the .org?   If DNS isn't setup properly you could be querying
other hosts to resolve localdomain.org.

> I use Bellsouth and have configured my systems (or some of them) to use
> mail.bellsouth.net as a smart host.  This works OK if I get all the
> parts right.
>
> However I know of some folks out there that are paranoid and check to
> see if there really is a "jim at localdomain.org" and call it spam if you
> don't exist.  The way I've got things set up, that's what From ends up as.
>
> Now my email address at BS is k4gvo at bs.net (expand as needed) but I
> use various local login ids, never k4gvo on my local servers.  I'd like
> to see if I could make this whole mess a bit more standard, if that' s
> possible.
>
> In the postfix config I think I can change the domain name but I don't
> see a way of fixing the user name.  I suppose I could change my local
> domain to something that does exist and that I own.
>
> So what's a good solution for this problem?

In Postfix you want to enable the relocated users table.   See:
http://www.postfix.com/ADDRESS_REWRITING_README.html#relocated

-Jim P.