Originally Posted by falko
Does this happen just for Hotmail, or for all emails you send to remote servers?
You can search for Hotmail here on the forums, there are a lot of threads already about this.
Also, make sure that your server isn't blacklisted: http://mxtoolbox.com/blacklists.aspx
It's blacklisted in 2 destinations :
SORBS-DUHL LISTED Dynamic IP Addresses See: Detail
Return codes were: 127.0.0.10 3600 234
Spamhaus-ZEN LISTED Detail
Return codes were: 127.0.0.11 900 265
could this be the problem, I have conacted them to remove my ip .