Jeroen Massar schrieb:
Rainer Duffner wrote: [..]
How does that work on IPV6 anyway? I read that RBLs will be dead in IPV6-land, due to the fact that the address-space can't be packed in a database anymore..
The person who writes that does not realize how much easier it becomes.
RBLs will simply take a scheme of:
Register in db a max of 5 spamming IPs in the database per /64, "" "" "" 50 spamming /64's per /48 "" "" "" 500 spamming /48's per /32
The '5' is variable of course. Too much spam, just block the whole /32 unless they clean it up. Verrrryy easy.
Heck for that matter similar system could be employed for IPv4:
Spamhaus does that, AFAIK.
Register in db a max of 5 spamming IPs in the database per /24, "" "" "" 50 spamming /24's per ASN
Tada, block out the whole ASN when it hits the threshold. Then again, there won't be much mail coming out of there in those cases.
Also, politically all /48's should be registered in WHOIS, which is of course a good thing. It seems though that there is no enforcement there and most ISPs don't care at all though.
Currently, RBLs are an important part of our spam-defence.
You do mean as a scoring method I hope...
Yes, but we also block. Mostly dynamic IPs and stuff on the swinog/IX-RBL. On my own mailserver, I block all Asian IPs ;-)
Rainer