Thanks for the suggestion.
Thanks for the suggestion.Andrew Devlin commented
From this article (https://technet.microsoft.com/en-ca/library/dn917455.aspx) and from my MS rep, Macs shouldn't be blocked from using Sync after you use the Set-SPOTenantSyncClientRestriction -Enable -DomainGuids cmdlet to restrict PCs to certain domains. Is this not the case?
15 votesAndrew Devlin commented
Nothing more to add here that hasn't already been explained above. Unchecking this by default will reduce the support tickets caused by users "oversyncing" all their OneDrive files locally and eating all their hard drive space.