Google Docs Sharing – How to Share Google Doc with ‘Anyone with Link’ in Organization

To make a table public, click the Share button and select the Public radio button under Visibility options. The change will be applied immediately. Close the dialog box.

When the Visibility is Public, no authentication is required to view your table and visualizations embedded elsewhere can draw from your data table instantly. Access to query your data table through the API (read-only, no authentication) is also supported. Your table will be included in the Fusion Tables public table search, and may also be indexed for search engines such as Google.com.

From Google Fusion Tables Help.

Your Google Apps admin has not allowed users to receive documents from outside your domain.

One of the sharing options you can set for Docs & Drive within a Google Apps account is weither or not users can share documents to people outside the organisation. One sub-option of this is that they can separately allow or deny users from receiving outside documents

As the administrator, you determine whether users can share their Google Docs (documents, presentations, spreadsheets, and drawings) outside your organization, whether they can access docs created outside your organization, and the default visibility level for new docs.

If you are the administrator of the domain you can change the settings via:

1. Sign in to the Google Apps administrator control panel.
2. Click the Settings tab and then select Drive and Docs in the left column.
3. In the Sharing options section, choose whether users can share docs outside your organization.
4. Hit Save

I'm not sure if this is on or off by default but just ask your admin if they can allow outside sharing. Worst case is they will say no because of X.