MX Record - can it be an IP address

Hi,

Firstly apologies - I don't know too much about this area and am
trying to get up to speed quickly. I've googled a lot but am a little
confused.

My friend has a domain name - I am hosting his web site on my server,
he has his own email server with a static IP address. He has setup
the nameservers to point to my web server, and I have setup a MX
record pointing to his static IP address.

All was working fine until some people reported mail bouncing back
with this message:

> It appears that the DNS operator for xxxxxxx.com
> has installed an invalid MX record with an IP address
> instead of a domain name on the right hand side.

Can anyone help or give me some tips?

thanks in advance...
diddlejubilee [ Fr, 20 Juli 2007 13:57 ] [ ID #1774697 ]

Re: MX Record - can it be an IP address

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On Fri, 20 Jul 2007, diddlejubilee [at] gmail.com wrote:

>> It appears that the DNS operator for xxxxxxx.com
>> has installed an invalid MX record with an IP address
>> instead of a domain name on the right hand side.
>
> Can anyone help or give me some tips?

They are correct, the entry should be: MX value machine.host.name


--
Cheers
Res
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Res [ Fr, 20 Juli 2007 14:35 ] [ ID #1774698 ]

Re: MX Record - can it be an IP address

In article <1184932643.351797.206780 [at] i38g2000prf.googlegroups.com>,
diddlejubilee [at] gmail.com wrote:

> Hi,
>
> Firstly apologies - I don't know too much about this area and am
> trying to get up to speed quickly. I've googled a lot but am a little
> confused.
>
> My friend has a domain name - I am hosting his web site on my server,
> he has his own email server with a static IP address. He has setup
> the nameservers to point to my web server, and I have setup a MX
> record pointing to his static IP address.

Have you considered reading the relevant RFC's?


> All was working fine until some people reported mail bouncing back
> with this message:
>
> > It appears that the DNS operator for xxxxxxx.com
> > has installed an invalid MX record with an IP address
> > instead of a domain name on the right hand side.
>
> Can anyone help or give me some tips?

RFC973, page 4, last paragraph.
RFC974, page 2, first paragraph.

Those RFC's are a couple decades old and remain applicable in most
aspects. No one competent to manage DNS for a mail system can be
unfamiliar with them.

--
Now where did I hide that website...
Bill Cole [ Fr, 20 Juli 2007 15:27 ] [ ID #1774699 ]

Re: MX Record - can it be an IP address

No. IP addresses are not allowed in MX-RRs.
- [ Do, 16 August 2007 23:24 ] [ ID #1797359 ]
Miscellaneous » comp.mail.sendmail » MX Record - can it be an IP address

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