Re: exim: FQDN != RFC1035
> Error: system's FQDN hostname (rook.3dlabs.com) doesn't match RFC1035
> syntax; cannot configure the mail system.
> What is RFC1035 syntax?
The labels must follow the rules for ARPANET host names. They must
start with a letter, end with a letter or digit, and have as interior
characters only letters, digits, and hyphen. There are also some
restrictions on the length. Labels must be 63 characters or less.
firstname.lastname@example.org (John Hasler)
Dancing Horse Hill