Good Morning, Are there any known issues with installing Exchange 2000 on a Windows 2000 DC, such as LDAP port conflicts, etc.? I know microsoft doesn't recommend this, but I work in a small shop with a single DC. The old Winnt 4.0 PDC exchange 5.5 is currently running on is not beefy enough to run Windows 2000, and will be turned into a McAfee Webshield SMTP server, and will be used as a relay for the new exchange server, after I move all of the mailboxes and public folders. ******************************************** Scott Overfield Network Administrator Gratiot County Community Mental Health 989-466-4109 soverfield@xxxxxxxxxx