I am trying to register a custom domain (financialsolutionsltd.co.uk) but I receive the below error, it is a domain already registered and I will be wanting to use Outlook.com to handle emails: 

This domain name can't be used because it contains a protected word or inappropriate language. Please contact support if you feel this is not the case.

The purpose of this account would be for email. Please can you unblock this domain (financialsolutionsltd.co.uk) so I am able to register it.

Thank you
Mail from my custom domain using the hotmail interface just goes to people junk mail... what can I do?  It's just *** Email address is removed for privacy ***
Ok,
How do I migrate existing emails from my old email server to my new custom domain Hotmail accounts? 

I can't figure out how to do it.
I'm having problems receiving incoming emails as of yesterday through my custom domain email (originally through the Small Business Live setup) . Outgoing email is fine. I log on through hotmail.com and it takes my custom email and I can see all my emails and email box but the incoming ones stop as of yesterday at 4:13pm PST. This is my business email so its pretty important to get it up and running. I've had a few people tell me that there email bounced back. I tested it and the bounced back message reads:

This message was created automatically by mail delivery software.
A message that you sent could not be delivered to one or more of
its recipients. The following addresses failed:
  <*** Email address is removed for privacy ***>
domain name system error:
domain bayareagroups.com:
domain not found

I have tried all the Options/Filtering/Safe Senders/Etc.  fixes offered on the forum. Doesn't make sense because I will receive an occasional junk email in my junk email folder. Please Help!