Using all lower case names is highly recommended and required by multiple specifications.
Be very careful changing these settings as it could create problems such as services failing to start.
Host Name: sesamserver
- Should be One word
- Should not contain a period or space
- test with the command "hostname"
(hostname sesamserver)
- reboot required after changing hostname
Fully Qualified Domain Name / FQDN: sesamserver.example.com
- Must end with a period and valid tld (.com or .local)
- test with command "ping $HOST_NAME"
(ping sesamserver)
- test with command "ping $HOST_NAME.$DOMAIN_NAME.TLD"
(ping sesamserver.example.com)
- Reverse dns or PTR record required for servers and remote media servers and remote gui systems
Hosts File: /etc/hosts or c:\windows\system32\drivers\etc\hosts
- Must start with and contain only "127.0.0.1 localhost"
Deprecated - Emulation of DNS with hosts files
- Must start with "127.0.0.1 localhost"
- Next entry must be "IP HOST_NAME.DOMAIN_NAME.TLD HOST_NAME"
- ex. (192.168.1.2 sesamserver.example.com sesamserver)
- if there are entries for other interfaces, use unique host names
ex. (192.168.2.2 backupinterface-sesamserver.example.com backupinterface-sesamserver)
- If there are duplicate entries only the first will be used