NBU VmWare technote confusion

Hello All,

Our Windows VMWare backups are failing with status cannot connect on socket(25).

I refered to the technote below , but I am a bit confused by it. "http://www.symantec.com/business/support/index?page=content&id=TECH193946"

It states VM Backup Host: mybackup-host , 

and in the solution we have :Add mybackup-host to the VM backup host's server list should allow the backup to start.

My confusion is if the VM Backup host is mybackup-host itself , then should it be added in its own list , or am I missing something here.