On Wed, 16 Mar 2005, Toralf Lund wrote:
> Maybe it's not that *well-defined,* but it in the Linux world it's at least
> *defined*. See 'man dnsdomainname'.
The parent domain of a host is not necessarily the same as its mail
domain. For example, my machines have a parent domain of csi.cam.ac.uk
which is not a valid mail domain.
You cannot find out the information you want without human intervention.
You might be able to automatically guess, but you'll still have to get
confirmation from a person that the guess is correct.
Tony.
--
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http://dotat.at/ ${sg{\N${sg{\
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\N}{([^N]*)(.)(.)(.*)}{\$1\$3\$2\$1\$3\n\$2\$3\$4\$3\n\$3\$2\$4}}