Hi

When we try to send mail to Outlook.com or hotmail.com accounts we get the following error:

COL0-MC2-F20.Col0.hotmail.com #550 SC-002 (COL0-MC2-F20) Unfortunately, messages from x.x.x.x (MY IP) 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. ##


I had a look and out IP is is no DNS blacklist or any other form of Spam filters.

Please assist urgently.

Regards

Neels

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