Sorry, you cannot send mail from your ISP due to a high abuse complaint rate.
I wonder if your ISP processes groups of users with each of its IP addresses. Therefore if someone else with the same IP address is causing michiefe (sp?) then you get blocked as well.
AOL assigns IP addresses to groups of users, hence AOL users' need to login to wikipedia before being allowed to edit pages. On the other hand using grouped IP addresses makes tracking you down harder
and, I guess, saves the ISP money?
MrS