I submit probably 4 tickets to Yahoo to finally get it fixed.
They wait 5 days and then send you this huge questionnaire to fill out. The first three times I spent about 20 minutes filling it out. They contacted me 5 days later each time and said, we really can't do anything.
The forth time I said f*ck-it I'll spend an hour writing the questionnaire response so that any idiot can understand how messed up Yahoo's policy is. They sent me a 5 page questionnaire, I sent them back a 20 response.
Guess what 3 days later they lifted the delay on my IP. I'm by no means white listed, but those emails aren't sitting in queue for 2-3 days anymore.