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Re: domain name definition in RFC2821

2006-04-22 00:29:19

On Sat, 22 Apr 2006 Valdis(_dot_)Kletnieks(_at_)vt(_dot_)edu wrote:

On Fri, 21 Apr 2006 21:44:03 PDT, Yuri Inglikov said:
There appears to be some disconnect between ABNF syntax and a prose. I.e. i t
appears that ABNF requires at least 2 sub-domain parts, while prose discu sses
"one or more dot-separated components". Which one is "more correct" an d any
scenario when a single-component domain name can be valid / useful in modern

Can you give an example of a "single-component domain name" that would *not*
be flagged as a failure to canonalize to a FQDN?

Are there any e-mail addresses that *work* (or even could *potentially* work)
of the form 'userid(_at_)com' or 'userid(_at_)net' or 
'some(_dot_)full(_dot_)name(_at_)to' or anything
else like that?

postmaster(_at_)ws ?

William Leibzon
Elan Networks