Just wondering why DH does not allow forwarding to aol.com?
Because AOL is overly aggressive when combatting spam and blacklist anybody that even has a hint of spam. If spam goes through a forwarding address at DreamHost, it smells like spam, so AOL blacklists the DreamHost sever it came through.
Just wondering if there are any other similiar limitations on email forwarding / usage that I should be aware of?
Same goes for Comcast.