On 2011-12-13 15:21, David F. Skoll wrote:
I think we need an informational RFC that specifies best-practices for a DNS{B,W}L to inform clients that they have been blocked.For example, a testpoint like: blocked.dnsbl.example.org could return an A record for name servers that are blocked and NXDOMAIN for others. This might even work out-of-the-box for some existing lists that return an A record for any query (or it may not, if they expect a reverse-dotted-quad.) It could even return a TXT record giving the reason for the block. Anyway, assuming this idea is widely-accepted (hahaha!), it would be pretty easy to make something that periodically tests your list of DNSBLs and disables those that are blocking your query.
there is a BCP for BLs floating around which addresses some if not all of this... MAAWF, RFC.. not sure which
