# To nominate a server as a bridgehead server, start the Active Directory Sites and Services MMC snap-in. (Select Programs, Administrative Tools, Active Directory Sites and Services from the Start menu.)
# Expand the Sites branch.
# Expand the site containing the server, and select the Servers container.
# Right-click the server, and select Properties.
# Select the protocol you want the server to act as a preferred bridgehead server for (i.e., SMTP or IP), as the Screen shows, and click Add.