our exchange 2003 server was recently higjacked and sending out tons of spam. I fixed all the filters and changed all the user passwords so the mail queues are once again normal. But, I am still not able to send emails to certain domains one of them being yahoo.com so i think we are on their blacklist. I cannot find the exact form on yahoo's site to request removal from their blacklist. I have checked all the blacklist checkers out there and our domain is on none of them. can someone help me out?