J,
I'm curious if you've checked your spam folder to see if the replies got stuck there? Probably not, but can't hurt to check. I've also noticed that AOL addresses have been bouncing off and on for the last few days. I don't think it would apply between AOL users though. Sometimes a "554 mtaig-mbb04.mx.aol.com ESMTP not accepting connections" error, sometimes a "dial tcp4: lookup mailin-02.mx.aol.com on 74.207.241.5:53: dial udp 74.207.241.5:53: i/o timeout" error, and sometimes (especially most recently) a "521 5.2.1 : (CON:B1) error (IP blocked). Not sure what's going on there.
Duane