Sharepoint sharing sites

Question

Hello, I have some questions about sharepoint sharing with guests.
Question 1:
When external sharing in the admin centre (Content can be shared with slider) has been set in new and existing guests, creating a new Sharepoint site by default creates the site with these permissions. Is there a possibility by default all the sites to be shared with internal users only and an admin can set if the specific site can be shared with guests? We do indeed need to have the slider up to new and existing guests as there are a few sites that need to be shared externally, but the majority of sites internal user create have to be only shared internal.
Question 2:
When we create a new site for guests, we send an invitation to the guest users in the specific domain we allow for each site so the guest registers with Azure AD creaing a guest account. We ideally need to allow a site owner to invite only guest users from the allowed domains (Limit sharing by domain) but it seems the site owner can invite any guest user registered over time in Azure AD.

Thank you

Answer 1

@Efstratios Stratis

1.If you want to enable external sharing in some site collections, you should enable Anyone link in the sharing policy of SharePoint admin center (tenant level). In the case of conflicts, the organization-wide configuration takes precedence over the site collection configuration. So there is no option to all the sites to be shared with internal users only and an admin can set if the specific site can be shared with guests.

2.Yes, if the guest user exists in the Azure AD, limit sharing by domain will be invalid.

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