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Re: Reverse Hostnames with '_msdcs' not valid

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  • Wietse Venema
    ... These are not HOST NAMES, therefore they are irrelevant to this discussion. Wietse
    Message 1 of 11 , Aug 29, 2012
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      Benny Pedersen:
      > Den 2012-08-29 13:18, Bernhard Schmidt skrev:
      >
      > > gc._msdcs.geotechnik.rwth-aachen.de
      >
      > _adsp._domainkey.example.org
      > foo._domainkey.example.net

      These are not HOST NAMES, therefore they are irrelevant to this discussion.

      Wietse
    • Bastian Blank
      ... This is invalid. A label may not include the underline character. ... [RFC 1034] The only exceptions are specified in other RFC, like the SRV record and
      Message 2 of 11 , Aug 30, 2012
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        On Wed, Aug 29, 2012 at 01:01:52PM +0200, Bernhard Schmidt wrote:
        > ok: 134.130.87.26 -PTR-> domaindnszones.geotechnik.rwth-aachen.de
        > -A-> 134.130.87.26
        > ok: -PTR-> forestdnszones.geotechnik.rwth-aachen.de
        > -A-> 134.130.87.26
        > ok: -PTR-> gc._msdcs.geotechnik.rwth-aachen.de

        This is invalid. A label may not include the underline character.

        | <domain> ::= <subdomain> | " "
        | <subdomain> ::= <label> | <subdomain> "." <label>
        | <label> ::= <letter> [ [ <ldh-str> ] <let-dig> ]
        | <ldh-str> ::= <let-dig-hyp> | <let-dig-hyp> <ldh-str>
        | <let-dig-hyp> ::= <let-dig> | "-"
        | <let-dig> ::= <letter> | <digit>
        | <letter> ::= any one of the 52 alphabetic characters A through Z in
        | upper case and a through z in lower case
        | <digit> ::= any one of the ten digits 0 through 9
        [RFC 1034]

        The only exceptions are specified in other RFC, like the SRV record and
        for the future TLS-certificates.

        Bastian

        --
        Our way is peace.
        -- Septimus, the Son Worshiper, "Bread and Circuses",
        stardate 4040.7.
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