Microsoft has released Update Rollup 5 for Exchange Server 2007 Service Pack 1

Update Rollup 5 for Exchange Server 2007 Service Pack 1 (SP1) resolves issues that were found in Exchange Server 2007 SP1 since the software was released. This update rollup is highly recommended for all Exchange Server 2007 SP1 customers.

For a list of changes that are included in this update rollup, see KB953467.

Update Rollup 5 for Exchange Server 2007 Service Pack 1 (KB953467)