Everyone should block/defer ALL email with no reverse DNS. Then maybe those email admins would get a clue.AOL.com does just that.
No, they don't, really. They 'may' do that (see below). Try it.
Effective immediately: AOL
220- may no longer accept connections from IP addresses which
220 have no reverse-DNS (PTR record) assigned.
Joseph Brennan
Columbia University Information Technology
