Do not have permission to log on/open this mailbox

Hi,

I am unable to access my mailbox on our SBS 2011 server. My Outlook (2010) was not updating so I removed my account and re-added it. Now it reports "Cannot start Microsoft Outlook. Cannot open Outlook window. The set of folders cannot be opened. You do not have permission to log on." If I try and use the OWA, I get "You do not have permission to open this mailbox.

On the SBS exchange console, the permissions on my mailbox look like this 

--------             ----                 ------------                                                ----------- ----
mydomain.loca... mydomain\Doma... {FullAccess}                                                False       True
mydomain.loca... NT AUTHORITY\SELF    {FullAccess, ReadPermission}                                False       False
mydomain.loca... mydomain\DPai... {FullAccess}                                                False       False
mydomain.loca... mydomain\Doma... {FullAccess}                                                True        True
mydomain.loca... mydomain\Ente... {FullAccess}                                                True        True
mydomain.loca... mydomain\Orga... {FullAccess}                                                True        True
mydomain.loca... mydomain\Admi... {FullAccess}                                                True        True
mydomain.loca... mydomain\Exch... {FullAccess}                                                True        False
mydomain.loca... mydomain\Orga... {ReadPermission}                                            True        False
mydomain.loca... mydomain\Publ... {ReadPermission}                                            True        False
mydomain.loca... NT AUTHORITY\NETW... {ReadPermission}                                            True        False
mydomain.loca... NT AUTHORITY\SYSTEM  {FullAccess, DeleteItem, ReadPermission, ChangePermissio... True        False
mydomain.loca... mydomain\Exch... {ReadPermission}                                            True        False
mydomain.loca... mydomain\Dele... {ReadPermission}                                            True        False
mydomain.loca... mydomain\Orga... {FullAccess, DeleteItem, ReadPermission, ChangePermissio... True        False
mydomain.loca... mydomain\Exch... {FullAccess, DeleteItem, ReadPermission, ChangePermissio... True        False

mydomain.loca... mydomain\Admi... {FullAccess, DeleteItem, ReadPermission, ChangePermissio... True        False
mydomain.loca... mydomain\Ente... {FullAccess, DeleteItem, ReadPermission, ChangePermissio... True        False
mydomain.loca... mydomain\Doma... {FullAccess, DeleteItem, ReadPermission, ChangePermissio... True        False

Does anyone have any tips that might help me track down where the problem is?

Thanks,

Dermot