You appear to be referring to two different issues.
1. Admin not receiving registration notifications
NOTE: This is a message confirming that someone has
completed registration, not that they are
attempting registration. Please confirm that you have visited OPTIONS > APPLICATION > EXTRAS & ADD-ONS > EMAIL & NOTIFICATIONS and the "Notify me when someone registers" box is checked.
2. AOL customers not receiving confirmation emails that allow them to complete registration.
NOTE: This doesn't seem to be relevant as users of the domains you name are unlikely to be using AOL's proprietary software to read their email.
Which of these are you experiencing difficulty with?
It will help if you post the URL of your forum, in case one of the Nabble team needs to check it.
Volunteer Helper - but recommending that users move off the platform!
Once the admin for GregHelp now deleted.