> > If Google Groups would **properly** process
> > the reports they ALREADY get
> > (and block the **IP address** of the offenders
> > --or perhaps that entire range) this would slow to a trickle.
>
> This would not work today. Most IP addresses people use are
> dynamic, and banning an entire range (say, 65536 addresses)
> because of one spammer is not something any of us would
> seriously advocate (hmm... I wish I could be more positive on
> that :-).
>
> There is a technically simple way out, but ISPs will have to implement
> some of it first. Now, most of them do assign some DNS entry to
> any IP address, typically made unique by including the IP address
> itself in the name - this cannot be used. However, at least some
> (e.g. mine) ISPs do offer a DDNS service; that is, I can have a
> static DNS entry for any (or all) of the IP addresses I get, whatever
> they are at the moment. From there on, it is easy; either block them
> based on reverse DNS or whitelist users based on their forward
> DNS.
> I don't see that happening any time soon, of course.
> I use Google groups and if they disappear I am not sure I would
> bother finding some other path - and I would rather have them
> public as they are, and non-anonymous - as they are (they do
> include the originating IP address, if someone wants to complain
> about it the right addressee of the complaint would be the ISP
> proviging this IP, not Google).
>
> Dimiter
If you do DNS lookup on a lot of the spam it is posted through unassigned IP range blocks reserved for China. Google could block those addresses without affecting any legitimate users.