I've tried to send to my own hotmail email address from a shared hosting environment using a php script. I can see in the email logs that hotmail accepted my email (smtp status code 250) but I just couldn't see it in my inbox or spam folder.

The php script is working if ran from a different IP. So I suppose my IP is blacklisted by hotmail in some way. However, I've checked the public RBL and http://postmaster.live.com/snds/ but they are all fine. Also, I think hotmail should reject my email if they think my IP in any blacklist.

Can someone point me a right direction to solve this issue and that would be much appreciated.