On Sun, 2007-05-20 at 12:51 -0700, Phil Pennock wrote:
> On 2007-05-19 at 15:34 +0200, Peter Thomassen wrote:
> > $ host -t mx mail.peter-thomassen.de
> > mail.peter-thomassen.de MX 10 mail.a4a.de
> > mail.peter-thomassen.de MX 20 rescue.a4a.de
> > $ host -t mx mail.glv.at
> > mail.glv.at CNAME glv.at
> > glv.at MX 10 mail.a4a.de
> > glv.at MX 20 rescue.a4a.de
> > $
>
> This, unfortunately, is broken. The hostname provided by MX resolution
> is not permitted to be a CNAME record; it may work for some combinations
> but other clients won't support it, so you'll not be reachable by some
> people (those following the standards carefully).
just to make it clear, it IS allowed to have a CNAME record pointing at
an MX record. what's not allowed, is
* CNAME and MX records for the same name
* MX records pointing at a name which has a CNAME record
Peter's DNS setup looks fine to me.
--
Kjetil T.
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