Please choose correct command to add an “emailserver1” host with IP address 10.

 The correct command to add an “emailserver1” host with IP address 10.50.23.90 using GAiA management CLI is mgmt: add host name emailserver1 ip-address 10.50.23.90. This command will create a new host object in the Security Management Server database, with the specified name and IP address. The mgmt: prefix indicates that the command is executed on the Security Management Server, and not on the local GAiA machine. The other commands are either missing the mgmt: prefix, or have incorrect syntax or parameters.