Block Outlook clients when accesing O365 externally
We are migrating from Exchange to O365, we are also using ADFS 3.0.
I have been asked to prevent Outlook 2010 and 2016 clients from accessing mail when off the corporate network. Users must be able to still access their email externally via Office.com and via Active Sync for BB.
I'm not sure where to start and have to produce a matrix of what is achievable without Conditional Access as we do not have licenses.