I had a problem with sending emails. I've found that my mail server ip address was listed at cbl and consequently spamhaus. Now the ip is delisted and the problem was fixed. However, I still can't send emails to hotmail.com. before delisting at least a message was written in the log that hotmail can't accept incoming mail from my mail server but after delisting, The mesage is not delivered but no error is logged to indicate the problem.
Any ideas what's wrong?