Hi! How do you install the KB930807 on a clustered Exchange 2003 server ? Do I install on active or passive node? Is there a version for clusters? http://support.microsoft.com/kb/930807/en-us

Hi, You need tostop the cluster services on passive node and apply hotfix & reboot the server if it requires. Step by Step procedure is given in this article for applying any service pack or hotfix on clustered Exchange servers. How to apply Exchange service packs and hotfixes