On Fri, 19 Jun 2009 13:52:58 +0100 "rich...@buzzhost.co.uk" <rich...@buzzhost.co.uk> wrote:
> http://en.wikipedia.org/wiki/Bounce_Address_Tag_Validation > > Should be possible to make that domain usable again with some work :-) It doesn't solve the whole problem though, it just tells you which of the backscatter mails are legitimate DSNs. The problem of identifying backerscatter in the first place seems to be getting harder. I was recently joe-jobed by a botnet in India and got a lot of backscatter that was hard to identify. There were a lot of DSNs without proper mime headers, and many of them had odd return-path addresses and a huge variety of subject patterns - including some in foreign languages, and asian character sets. I also got a lot of CR mail. A few of these have special headers but most are pretty hard to filter, because they use the same kind of language as website verification messages.
