Re: [Exim] Secondary Mail Server/Looping

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Author: Matthew Byng-Maddick
Date:  
To: exim-users
Subject: Re: [Exim] Secondary Mail Server/Looping
On Thu, Nov 21, 2002 at 09:15:48AM +0000, Philip Hazel wrote:
> On Wed, 20 Nov 2002, Marcelo Moreira wrote:
> > Then insert a MX entry like this:
> > domain.com MX 15 10.10.6.70
> NO, NO, NO, NO!
> You should NEVER put an MX record like that into the public DNS.
> Think about what will happen if a foreign host accesses those MX
> records, and it has its own local network that is using 10.x.x.x
> addresses. That is a disaster.


Erm, worse than that, the RHS of an MX is the cost and then a canonical
name. 10.10.6.70 is not a canonical name.

MBM

--
Matthew Byng-Maddick         <mbm@???>           http://colondot.net/