Need DNS records help for single server (and IP), and multi-domain mail server.

[Grant Taylor]

On 08/23/2017 07:31 PM, bind-users at gtaylor.tnetconsulting.net wrote:
> I think that it may be possible for someone to publish a PTR record in 
> their IP space that reverse resolves to a name of one of your MX 
> servers.  There by allowing their bogus server to send email as you.

It is conceptually possible for SPF filters to do a Forward Confirmation 
of a Reverse DNS lookup (a.k.a. FCrDNS), but I wouldn't hold my breath 
for such.



-- 
Grant. . . .
unix || die