using an ip in an MX record

[Chad M. Stewart]

At 08:59 AM 08/11/2001, Leon wrote:

>pelln at icke-reklam.ipsec.nu.invalid wrote in message 
>news:<9ku987$7go at pub3.rc.vix.com>...
>
>Thanks peter, thanks Jim.
>
> >From your comments, it seems that using a dotted quad in an mx address
>is not possible. In particular, according to Jim it only appears to
>work because sendmail has fallback that get the mail through, despite
>having a broken mx record. This is useful info.
>For what its worth, Jims argument that if it doesn't appear in the
>Cricket book it is not correct doesn't wash. It seems reasonable to
>expect that the Cricket book may not have covered all circumstances (
>and it didn't expressly forbid dotted quads), and certainly the mail
>is being delivered, even with the dotted quad mx. Just those nasty
>logs ...
>
>I see now what I have to do: get the isp supplying the ip to the
>mailserver to put a canonical name for it into their nameserver, and
>to use that in the mx record. Then get the customers local support to

Last I knew MX records should not contain CNAME entries.  I'd have the ISP 
define another A record and use that within the MX record.  CNAMEs and mail 
do not mix.


-Chad-



>go and set up the mailserver so it knows its fqdn. Three sets of tech
>support, inc us ... uggh.  Oh well,
>
>thanks for both of your help - I learnt something from it all.
>
>appreciated,
>Leon