If you have HMC 4.0 with Windows SharePoint Services 3.0 SP1, it is recommended you deploy the following Update Rollup 1. Description of Update Rollup 1 for the Hosted SharePoint services in Hosted Messaging and Collaboration 4.0, http://support...

When HMC 4.5 was released, Microsoft introduced an OOF transport agent to support Out of Office (OOF) feature for tenants among different organizations within the same HMC environment. This agent, however was not availalbe for HMC 4.0 at that time. ...

Description of Update Rollup 1 for Hosted Messaging and Collaboration 4.5 http://support.microsoft.com/?id=957583 Here is a brief description on what is included in this Rollup 1. When more than one user has the same common name (CN) attribute...

On a monthly basis, the HMC test team will conduct a Windows update compatibility test (where the major roll-ups and updates will be tested) on different versions of HMC environment. Windows update compatibility test (Exchange 2007 SP1 RU4 was included...