On Mon, 12 Mar 2012 14:47:41 -0500 (CDT) David B Funk <dbf...@engineering.uiowa.edu> wrote:
> This concept was discussed/debated on this list about 2 years ago (~ > Apr 2009; search for the subject of "emailBL"). > There was some disagreement about how to handle the '@' within > the context of a DNS record and about privacy/security issues. In the case of APER, the entire list is publicly downloadable, so I don't think making it available via DNS introduces any additional privacy issues. Handling '@' within a DNS record is a solved problem (see the SOA record). You just replace it with a '.' If we were worried about the (extremely unlikely) clash between "b...@sub.example.org" and "bob....@example.org", we could just use the sha1sum of the lower-cased email address as the DNS lookup key. Regards, David.