http://postmaster.info.aol.com/spf/
"AOL uses SPF for maintaining the whitelist.
AOL will begin using SPF records to maintain our whitelist in the near future. It is best for all organizations on AOL's whitelist to begin listing and maintaining (up to date) their SPF records so AOL can maintain accurate and up-to-date whitelisting of that domain's IP addresses. We will provide additional information in conjunction with our whitelist information pages.
SPF Facts!
* SPF is indicated by a TXT DNS record .
* SPF is a counterpart of the MX list.
* Because SPF protects the return-path, users protected by SPF will stop getting bounces for messages they did not send.
How do I setup SPF?
Publishing SPF is easy and requires no software upgrades on the part of the publisher. Using SPF to block spoofed emails requires fairly simple upgrades to inbound mail servers. Several major MTAs have SPF modules already. More can be found at
http://www.openspf.org/downloads.html "
" In the mean time an exceptional SPF wizard can be found at
http://www.openspf.org/wizard.html "