How to Implement the Central Store for Group Policy Admin Templates http://blogs.technet.com/b/askpfeplat/archive/2011/12/12/how-to-implement-the-central-store-for-group-policy-admin-templates-completely-hint-remove-those-adm-files.aspx
Use the following site to audit and assist in the creation of a valid SPF record for your email domain: http://www.microsoft.com/mscorp/safety/content/technologies/senderid/wizard/