Salaudeen Rajack

Salaudeen Rajack - Information Technology Expert with Two-decades of hands-on experience, specializing in SharePoint, PowerShell, Microsoft 365, and related products. He has held various positions including SharePoint Architect, Administrator, Developer and consultant, has helped many organizations to implement and optimize SharePoint solutions. Known for his deep technical expertise, He's passionate about sharing the knowledge and insights to help others, through the real-world articles!

6 thoughts on “SharePoint Online: How to Limit External Sharing by Domain?

  • Does the 500 limit at the site level count towards the total 2000 limit at the tenant/admin center level?

    For ex: If there are four sites and each site restricts 500 unique domains (for total of 2000 unique domains) and lets assume there are no domains configured in Tenant/Admin Center, will the domains configured at the site level exhaust or count towards the 2000 limit allowed at the Tenant/Admin Center level?

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  • If we uncheck the box ” Limit external sharing by domain”, will the existing users lose access ?

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  • HI is it possible to whitelist specific email from the blocked dumain to access site?

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  • The maximum number of domain that can be added is 500 and not 60 in SharePoint admin Portal.

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  • Great overview… can you share how this interacts with the Azure AD B2B settings for external collaboration. Are these SharePoint settings in addition to those in AAD (ie: AAD takes precedence), or are they two distinct settings?

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