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You _do_ need an MX record for sending mail to a Domain.
Let me explain, however, why, AIUI, Paul doesn't.
The Domain in this case is HOMEIP.NET - it has an MX record properly
defined, as mail.dyndns.org (priority 20) and mail2.dyndns.org (priority
50.)
To send email to the SubDomain paulgordon.homeip.net you first send
email
to the domain (homeip.net's mail server). Homeip.net's mail server runs a
specially modified routing algorithm to allow it to send mail to wherever
the
SOA is defined on any of its subdomains.
What this means in practice is that, if you want to host something
dynamic,
then you don't need to set up your own MX record - the dynamic domain
provider
will sort this for you.
If you want to host a real domain, for example foxybanana.com, you
need an
MX record.
-----Original Message-----
From: Paul Gordon
[mailto:paul_gordon@xxxxxxx]
Sent: Tue 28/05/2002 21:49
To: ukha_d@xxxxxxx; wendyjaynegordon@xxxxxxx
Cc:
Subject: RE: [ukha_d] How important is static
IP?
Personally, I don't generally find having dynamic IP a
problem
for home use.
As previously mentioned, just about the only thing I
can't get it to do is
to host a provate domain. - It's usually tied to
the
namespace that the DDNS
provider owns, so for instance, DynDNS,org have
about 20 domain trees that
you can choose to be under, hence I have
Paulgordon.homeip.net, but I can't
have gordon-net.co.uk which I also
own
(but am about to allow to lapse...)
a couple of small points to bear
in
mind:
1: - you *CAN* have an SMTP feed to a dynamic IP address - I
have
one
working perfectly, - mail to paul@xxxxxxx to see it
in
action... :-)
2: - you do *NOT* _need_ an MX record at all to
receive mail, - you only
need an MX record if your SMTP listening server
is
on a different IP address
to that which your DNS "A" record resolves...
-
Do an NSLOOKUP on
paulgordon.homeip.net, you will see it resolves to
80.1.127.35 - as my SMTP
mail server is listening to port 25 on that IP,
I
do NOT have (or need) an
MX record configured.
HTH
Paul
G.
>From: "Chris Bond"
<chris@xxxxxxx>
>Reply-To: ukha_d@xxxxxxx>To:
<ukha_d@xxxxxxx>
>Subject: RE: [ukha_d] How important is
static IP?
>Date: Tue, 28 May 2002 13:27:09 +0100
>
>
>
It seems a few of us are trying to decide which ADLS ISP to go with
>
> at the moment, so I'd like to know just how important those
who've
> > already taken the plunge feel it is to have static
IP?
>
>Well if you want to use SMTP mail its very important and
it's the best
>mail method to use, don't need to mess with pop3/imap
:)
>
> > Which HA toys might need static now or in the near
future?
>
>Lots :)
>
> > I presume if I want to
run
a mail server I need static for my DNS MX
> > record to point to.
Is
this correct, or could you get away with
> > something like
dyndns?
My guess is that dyndns would sometimes be out
> > of date and
mail
would get bounced.
>
>I'd stay away from dyndns for SMTP mail,
there are a few people that
>offer backup mx but at the price you pay
u
might as well get a static
>ip.
>
>Eclipse charge 26quid
all
inc for Adsl with 5 static ips :)
>http://www.eclipse.net.uk.
>
>Kind
Regards,
>Chris
Bond
>
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