[nycbug-talk] BIND and MX records

[alex at pilosoft.com]

On Wed, 13 Jun 2007 alex at pilosoft.com wrote:

> On Wed, 13 Jun 2007, Rodrique Heron wrote:
> 
> > Hi Guys,
> > 
> > I inherited a bind server and I'm trying to clean it up, I noticed that
> > allot of the host records have MX entries like this:
> 
> > mailstore01      A       192.168.2.1
> >                         MX      10 mx1
> >                         MX      12 mx2
> >                         MX      14 mx3
> > 
> >  From what I understand, this forces mail sent to host.domain to always
> > go through one of the MX servers. But is this necessary for the mail
> > store ? Are their any known side effects ? I am trying to ascertain if
> > it's causing an occasional problem I'm having with mail delivered to our
> > domain bouncing with the following error:
> No. If there's no hostname on the left, it means "domain" itself. In
> other words, the MX entries apply to the domain, not the hostname.
Erm, I'm trippin' today.

Sorry, you were right, means it has to go through MX's.

Whether it is *necessary* depends on your local setup. Does host really 
accept mail directly?

> highest-priority mx is in fact accepting mail instead of bouncing it
> around.
yeah ;