Last year we purchased one Exchange 2007 license and CALs for the our client name with media. But unfortunately they shifted their office another place , that time they lost their exchange server Media and key. We have AMC for that client. Now they need to reinstall the exchange server . We also contact Microsoft and got Windows server 2008 license key. What is real procedure to collect Exchange server 2007 license for the existing company.

Contact the reseller who sold you Exhcange and see if they can help you. Otherwise, contact Microsoft.