Re: [cobalt-users] Raq550: Denied Email due to no reverse DNS

["Ken Marcus -Precision Web Hosting" <ken@xxxxxxxxxxxxxxxx>]

> > > We get the following message when we send email to certain hosts.
> > > "Deferred: 451 Reverse DNS record required to deliver to this host.
> > > Please contact your network administrator."
> > >
> > > We use Raq550's with multiple domains on a single IP address.  How do
we
> > > make reverse DNS work without assigning each domain a separate IP
> > > address?
> > >
> > John,
> >
> > You just need to have one reverse DNS for the IP. It does not matter if
it
> > does not match each domain. It should match one of the domains on the
> > server.
> >
> > 65.118.55.81  has no reverse dns.
> > http://samspade.org/t/dns?a=65.118.55.81
> >
> > Ken Marcus
>
> Ken,
>
> Maybe I am doing something wrong.  PLease help here.
> Let's say I have a number of domains on a single IP address.  I assume
> that you are saying that only one of these domains need to have a
> reverse DNS setting.  I have several with a reverse record typed in ...
> On a Raq550, what should I type for the Reverse PTR in the GUI?
>
> John
>

John,

I don't know the exact entry via the GUI on a raq4.

If your colo provider did not delegate the reverse DNS to you, then nothing
you do in the GUI will make a difference.  In that case you'd just ask your
provider to set the reverse DNS for your IPs.

Ken Marcus
Precision Web Hosting
ken@xxxxxxxxxxxxxxxx
www.precisionweb.net