Domain

Before SNI, each SSL certificate required a dedicated IP. Now, Server Name Indication lets multiple secure websites share a single IP address.

Prevent legitimate messages from going to spam. Learn how to whitelist email addresses, domains, and IPs in Premium Business Email and webmail.

If you find that spam from certain senders, domains, or IP addresses is sneaking through the Premium Business Email spam filter, you can create a blacklist to block certain senders from being able to send you email.

Need to whitelist your Cloud Sites domain? Learn how to use your test link to identify your data center and find the correct outbound IP address ranges.

Secure your CentOS 7 server with FirewallD. Learn how to easily start, stop, enable, disable, and check the status of this dynamic firewall via SSH.

While often confused with a domain name, a hostname is a label used to identify a specific computer or server on a network, like the internet or a LAN.

Common questions and answers relating to domain registration.