> > >A simple implementation of this is
> > >
> > >accept dnslists = blackholes.mail-abuse.org
> > > delay = 4m
> > >
>
> Seems as if a new verb like "deny-delay" would be appreciated.
>
> But I'm sure there are already ways of achieving this :-)
IIRC, that would be:
deny dnslists = blackholes.mail-abuse.org
delay = 4m
Now something like a control = tarpit would be more interesting. If set, it
would make the connection slow. Only read so many bytes a second (say
512/sec) and when sending, only send one line of text or one responce within
a time.