domain blocked

25. October 2013 · Write a comment · Categories: Hotmail, Outlook.com · Tags: , , ,
hi i'm working for a retail company and we forward manager email to their privet Hotmail account, but recently we have been blocked can you help with this the soonest..
thank you

There was a SMTP communication problem with the recipient's email server.  Please contact your system administrator.

            <*** Email address is removed for privacy *** #5.5.0 smtp;550 SC-002 (BAY0-MC3-F45) Unfortunately, messages from xxx.xxx.xxx.xxx 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