--- Andrew Alford <[EMAIL PROTECTED]> wrote:
> Is it necessary, even if you can ping on the internet your "mail.xyz.com
> or smtp.xyz.com", to have your mx server listed with your registrar?
Well, your question is vague. Are you pinging from outside or inside
your intranet? You haven't done a true test if you don't ping from
outside your intranet.
What it comes down to, does the outside see those addresses. If the
outside can then it's not "necessary". On the other hand, when you
register your name with ICANN, you are required to provide 2 DNS
servers you can be reached from. It's typical to place MX records on a
DNS server that's outside your network as well as inside your network
(though outside your firewall).
If you have a lot of questions about DNS, you're probably better off
finding a list that specializes in it, though I suspect there's plenty
of expertise on this list.
=== Al
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