I'm told by
support@lunarpages.com that AOL has "soft blocked" mail from jupiter, danzig, sirius, and saturn. AOL soft blocks last around 48 hours and the support person indicated that the block began last night, so it sounds like we won't be able to send mail to AOL addresses for at least another 24 hours.
Unfortunately, some lunarpages.com customers had exploitable mail forms on their webpages, and somebody took advantage of that to send a lot of mail, some of which must have triggered AOL's blocking. There's nothing that can be done. AOL is the big boy on the block and does whatever they want.
Disclaimer: I'm not a lunarpages.com staff person. I'm just repeating what the support people told me, along with some conjecture based on my own experience.