I am attempting to installing Exchange 2003 SP1 on a Windows 2003 Std Server. This will be the first 2003 server and will co-exist with a 5.5 SP4 until all boxes have been moved. I DL'd the latest Exchange Deployment tool and all step have been succesfull until I attempted to install the ADC. When I run the resouce mailbox wizard in Step 3, I get as far as where it wants me to set credentials. When I attempt to set, I get an error that the "server is not operational" Via google it appears that this could be DNS related, but I have verfied that DNS is clean and replication is sound. Any thoughts? -- Coz Strongwell