Outlook clients still make Public Folder connection to 2007 Server

Hi

I have introduced 2013 into our 2007 environment and migrated a few users who are working fine

Checking the Connection Status of their Outlook 2010 session I notice there is 1 line with a connection to a 2007 Mailbox Cluster of Type 'Public Folders'

Although we do not use Public Folders, this Cluster houses the Generation Server for the Default Offline Address List in 2007 and is selected for Public Folder distribution

The Default Offline Address List (Ex2013) has Default OAB set to 'True' for a E2013 Client Access Server

What configuration do I need to change so that Outlook users in 2013 do not connect to 2007 PF Server? Thanks

NB: Output from OABVirtualDirectory in 2013 below:

Name                            : OAB (Default Web Site)
OfflineAddressBooks             : {\Default Offline Address List (Ex2013)}
RequireSSL                      : True
BasicAuthentication             : False
WindowsAuthentication           : True
Server                          : CAS1
InternalUrl                     : https://company.com/OAB
InternalAuthenticationMethods   : {WindowsIntegrated}
ExternalUrl                     :
ExternalAuthenticationMethods   : {WindowsIntegrated}

Name                            : OAB (Default Web Site)
OfflineAddressBooks             : {}
RequireSSL                      : True
BasicAuthentication             : False
WindowsAuthentication           : True
Server                          : CAS2
InternalUrl                     : https://company.com/OAB
InternalAuthenticationMethods   : {WindowsIntegrated}
ExternalUrl                     :
ExternalAuthenticationMethods   : {WindowsIntegrated}

shapi