Domains
A domain is a claimed, postmaster-authorized mail suffix — like
sithbit.com — that a mailbox references so
that MX servers know how to route mail to it over SMTP. Domains are
registered and administered on-chain: someone must claim a domain and have
the postmaster authorize it before mailboxes on that domain
can send or receive mail through the normal MX/SMTP path.
Looking up a domain
sithbit domain get <domain>
This is always available — unlike the admin subcommands below, it needs no special CLI feature. For example:
sithbit domain get sithbit.com
Note:
domain create,domain transfer, anddomain deactivaterequire the CLI’sdomainfeature (enabled by default) and always require the postmaster’s signature — domain administration is not something an ordinary mailbox owner can do unilaterally.
Deactivating a domain (see Deactivate a domain) blocks sending and deleting mail for mailboxes that reference it, and also blocks creating or updating a mailbox to reference it: a mailbox’s domain must be a registered, active domain account (or no domain at all), so deactivation locks a domain down from new registrations too.