Re: A Quickhack

On Sun, Oct 26, 2003 at 08:11:14AM -0500, Richard Rognlie wrote:
> 
> It might tell you that "yes, this host is allowed to be this IP"
> but it says nothing about "this IP is allowed to send mail and 
> claim to be this hostname"


No. Having a 

somehost  A 1.2.3.4

does not mean, that somehost is allowed to be 1.2.3.4, but in this
context it confirms that 1.2.3.4 is permitted to claim to be 
somehost.somedomain....  Why else would anybody have such an entry?

Should we really try to restrict who is allowed to send e-mail at all?


> I can think of many times that I've had hosts that have completely
> valid host/IP setups, but that I would rather they not send mail.

Have these hosts been part of your domain?


regards
Hadmut