If you purchased Yammer Enterprise through a Microsoft partner, and you do not have a contract with Microsoft for Yammer ...

If you purchased Yammer Enterprise through a Microsoft partner, and you do not have a contract with Microsoft for Yammer Enterprise, then please consult with the partner regarding applicable terms and conditions for Yammer Enterprise. If you obtained Yammer Enterprise from Microsoft, then please consult the Yammer Enterprise Online Service Use Rights for the specific usage rights and exceptions, including the separate privacy and security statements which govern your use of Yammer Enterprise. Please be aware that while Yammer Enterprise is offered with certain SharePoint Online and Office 365 Enterprise Plans, it is a separate online service to which the Office 365 Trust Center does not apply.