Exchange GRT backup failure (Netbackup) caused by name resolution

The most common problem with backup using Netbackup is name resolution. Servers/clients have to be resolvable by the computer name (not fqdn), which in multi-domain environment brings some challenges (servers have to be added to the hosts file on the client). Most recent problem: Exchange GRT backup finishes with status 1 (ie. not good for single item restore), which was fixed by fixing the name resolution.