From: William Hunt on
On Sat, 2 Feb 2008, Tom Newton wrote:
> On 2008-02-02, Grant <g_r_a_n_t_(a)dodo.com.au> wrote:
>> On Sat, 2 Feb 2008 01:53:45 +0000 (UTC), Tom Newton <tom(a)server.invalid> wrote:
>>> Just make one up.
>>> Or let example.org stand.
>>
>> ~$ host example.org
>> example.org has address 208.77.188.166
>> Yeah, right...
>> Grant.
>
> Mine is google.com and it has never caused any kind of
> a problem.
> I am speaking from experience.
> You ought to try it sometime.
> Tom


You are not running an SMTP server, as per the OP's original
questions. If you want to run an SMTP server, you'll
need a legitmate domain name (A, MX, and PTR records).
And that pretty much requires a static ip#.
Having a dynamic DHCP ip# pretty much rules out running services.
If you will be using your ISP for SMTP and POP/IMAP, then no,
the domain name doesn't really matter. Your ISP will recognize
you by the ip# they have assigned you.

As i said in previous post, it all depends on what you want to do.
One size does NOT fit all.

--
William Hunt, Portland Oregon USA