Hi!
RBLs are neither authorised (EU privacy laws anyone?), nor the appointed authority to keep databases on "whats static or not". RIRs -are-, if anyone should maintain a database on such things, i'd be the rirs (which they have, it's called "whois", it just lacks a field that indicates the type of assignment method used.
Who cares!? This is something between the ISP using them and YOU. If people want to make use of ANY datasource thats their own thing. They are not forced to use it at all. There is no EU law or anything involved here. There are blacklists that block .CN, so what, up to you to use it it not. Same with iptables, you can also filter anything you like there, yourselve. No EU law telling anything about that. Stick to the point, solve your issue with the party receiving your mails. they dediced to use the list, and most likely were not forced to do so. If you want to mail with them, fix your reverses. If not, no problem either. But stop whining :) Byem, Raymond.