Expansion of the number of restricting domains for external sharing
According to the below knowledgebase, 120 domains in maximum can be set to allow or block sharing domain list at the tenant level, and 60 domains at the site-collection level.
I hope it could be expanded or unlimited the number of domains.
“Restricted domains sharing in SharePoint Online and OneDrive for Business”: https://support.office.com/en-us/article/Restricted-domains-sharing-in-SharePoint-Online-and-OneDrive-for-Business-5d7589cd-0997-4a00-a2ba-2320ec49c4e9?ui=en-US&rs=en-US&ad=US
Marco Garibay commented
Any update on this? This is limiting us
Please the number of restrictions on external domain registration at tenants