Re: [exim] OT: Daft Question: HELO/EHLO FQDN or FQHN?

Ron White schrieb:

> 'valid principal host domain name' is that a host name, a domain name, a
> host and domain name, a FQDN, a FQHN?

I don't see any difference between a FQDN (a "fully qualified domain
name" of a host) and a FQHN; in fact, that's the first time I read
about something like a FQHN.