I'm running RockLiffe MailSite on a W2K Server box. Been running it for almost a year now, and ran into very few problems. I didn't make any changes to the settings when AOL mail started getting returned to my users. So I really think it is a problem on AOL's end, unless it is a problem with my upstream's DNS records.

I just hope it starts working soon. Everyone seems to know someone on AOL that they e-mail.