incrediBILL - 1:01 am on Jul 20, 2010 (gmt 0)
the IP address is "not listed" on any of the dnsbl lists
haha - jokes on me - I forgot you were the OP!
I was scratching my head wondering how you knew this... then I scrolled up :)
Have you went to AOL's Postmaster page [postmaster.aol.com] and checked out everything there?
The troubleshooting page is quite extensive and informative.
I'd start there.