backup mail server

[Terrence Koeman]

> ;system mail server
>   MX 10 mail
>   MX 20 mail2
> mail  CNAME @
> mail2  A 65.0.32.xxx

MX (and NS) records cannot point to a CNAME, so the 'mail' MX is broken.
Only A records are allowed.

You're right about the preference order though.

--
Regards,

Terrence Koeman

Technical Director/Administrator
MediaMonks B.V. (www.mediamonks.nl)

Please quote all replies in correspondence.

> -----Original Message-----
> From: bind-users-bounce at isc.org [mailto:bind-users-bounce at isc.org]On
> Behalf Of phrogg
> Sent: Tuesday, October 30, 2001 22:20
> To: comp-protocols-dns-bind at moderators.isc.org
> Subject: backup mail server
>
>
> Hi,
>
> I'm trying to set up a backup mail server.  However, either I
> don't know how
> it works (in action), the mail server is broken, or I didn't do the DNS
> correctly.  This is what I have in my zone file:
>
> ;system mail server
>   MX 10 mail
>   MX 20 mail2
> mail  CNAME @
> mail2  A 65.0.32.xxx
>
> >From what I understand about how email servers work, they first
determine
> the MX records.  My dns server would return the addresses for "mail" and
> "mail2".  Then the mail server would try to deliver to the
> address at "mail"
> then, if that fails, the address at "mail2", since it has a higher
> preference value.  When I shut down my mail server (located at
> "mail"), and
> have someone send a test email, it gets bounced back to them, instead of
> being sent to the address at "mail2".
>
> So, my question is this: are my dns records set up properly?  Is
> there more
> I need to do?  I'm trying to narrow down by eliminating what's right so
I
> can figure out what's wrong.
>
> Thanks,
> phrogg
>
> --
> "In a time of national crisis, we must remain more vigilant than ever in
> defending the freedoms that make America unique in the world."
> If sex is clean and food is dirty, playing with your food causes
> blindness.
> --
>
>
>
>


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