You can try right hand side black lists (RHSBL) for domain part.
On Tue, Dec 14, 2010 at 4:28 PM, Marc Perkel <supp...@junkemailfilter.com> wrote: > Are there any DNSBLs out there based on email addresses? Since you can't use > an @ in a DNS lookup - how would you do DNSBL on email addresses? Is there a > standard? > > -- > Marc Perkel - Sales/Support > supp...@junkemailfilter.com > http://www.junkemailfilter.com > Junk Email Filter dot com > 415-992-3400 > >