However, over the past few days I have started getting obvious junk mail directly into my inbox (not the Junk folder).

My junk settings are set to Exclusive, so I should only receive messages from either my contacts or addresses on my safe list into my inbox.

Today for example, I received a message Subject: Are you suitable for laser eye surgery?‏ from *** Email address is removed for privacy *** on behalf of Optical.Express (*** Email address is removed for privacy ***).  When I click into message details, it says "This sender is in your contact list".  I have checked my contact list (and my safe senders) and this contact is definitely not in my contacts.

How/why is Outlook now allowing these items into my inbox, is the 'exclusive' junk filter broken, and how to I fix it?

Any help much appreciated.