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Re: Strict RFC x821 Compliant: HELO/EHLO

2005-07-03 13:55:23

Bruce Lilly wrote:

"a valid host name can never have the dotted-decimal form
#.#.#.#, since at least the highest-level component label
will be alphabetic."

True, at least to the present...  See RFC 3696

Degenerated into <toplabel>, starting with a letter, ending
with letter or digit, otherwise also hyphen.  Something we
could improve in 2821bis.  The SPF-spec. needed <toplabel>.

Only ALPHA isn't good enough for any future xn-- etc. TLD.

if ICANN goes crazy

After their ".net" suicide prepare for the worst :-(  Bye