[rbldnsd] what means the !<IP>

[furio ercolessi]

On Fri, Mar 19, 2004 at 08:53:33AM +0100, Thomas Vogt wrote:
> Hello
> 
> I'm useing the dul.sorbs list with rbldnsd. But I'm not 100% sure what
> the "!" at the beginning of the line in the dul list means? Like:
> ...
> !80.77.197.14/32
> !80.93.35.1/32
> !80.93.35.2/31
> !80.93.35.4/30
> !80.93.35.8/31
> !80.93.35.10/32
> !80.93.35.12/30
> ..
> 
> Can anyone explain me that?

It means 'whitelisting'.  For instance,

80.83.35.0/28
!80.93.35.8/31

means that you are effectively blocking
80.83.35.{0,1,2,3,4,5,6,7,10,11,12,13,14,15}.

DUL lists often do so when somebody writes them swearing that their
IP is static :-)

furio