Did you do what the message says: "Please contact your Internet service provider"? That's all you can do.
when we traying send email to hotmail.com email adress we are receiving next message:
The following recipient(s) cannot be reached:
firstname.lastname@example.org on 11.6.2012 8:12
There was a SMTP communication problem with the recipient's email server. Please contact your system administrator.
<srv2.komvp.gov.ba #5.5.0 smtp;550 SC-001 (SNT0-MC4-F7) Unfortunately, messages from 18.104.22.168 weren't sent. Please contact your Internet service provider since part of their network is on our block list. You can also refer your provider to http://mail.live.com/mail/troubleshooting.aspx#errors.>
Please can you help us to resolve this problem issue .
Thanks a lot and best regards,