Date: Wed, 26 Nov 1997 13:05:13 -0800 (PST) From: Dan Busarow <dan@dpcsys.com> To: Christian <PLAZAS_CHRISTIAN@COLSTATE.EDU> Cc: questions@FreeBSD.ORG Subject: Re: Mail problems Message-ID: <Pine.UW2.3.95.971126125835.26767G-100000@cedb> In-Reply-To: <17EE3E869F2@colstate.edu>
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On Wed, 26 Nov 1997, Christian wrote:
> exchanger for mtna.org is a machine called mtna_pdc.mtna.org . I vaguely
> recall a discussion on one of the freebsd mailing lists a few months ago, about
> the fact that having a hostname with an underscore violates some RFC. I
The RFC you are looking for is RFC-952. Allowable characters
are [a-z][A-Z][0-9] and -
>From the RFC
B. Lexical grammar
<entry-field> ::= <entry-text> [<cr><lf> <blank> <entry-field>]
<entry-text> ::= <print-char> *<text>
<blank> ::= <space-or-tab> [<blank>]
<keyword> ::= NET | GATEWAY | HOST | DOMAIN
<hname> ::= <name>*["."<name>]
<name> ::= <let>[*[<let-or-digit-or-hyphen>]<let-or-digit>]
RFC-1123 removed the requirement that the name start with a letter
but otherwise 952's rules stand.
Dan
--
Dan Busarow 714 443 4172
DPC Systems / Beach.Net dan@dpcsys.com
Dana Point, California 83 09 EF 59 E0 11 89 B4 8D 09 DB FD E1 DD 0C 82
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