Keith Edmunds wrote:
> someone who has three MX records and he rejects all mail to the primary
> and tertiary MX, and accepts mail on the secondary.
>
> I wouldn't recommend doing that for a business, however.
This is called nolosting.
http://nolisting.org/
A number of companies have 127.0.0.1 as the primary MX IP.
Email is often bounced in this situation unless you reconfigure
postfix to skip the MX entries.
Jacqui