From owner-freebsd-questions Wed Nov 26 13:05:18 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id NAA19244 for questions-outgoing; Wed, 26 Nov 1997 13:05:18 -0800 (PST) (envelope-from owner-freebsd-questions) Received: from cedb.dpcsys.com (cedb.dpcsys.com [206.16.184.4]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id NAA19237 for ; Wed, 26 Nov 1997 13:05:14 -0800 (PST) (envelope-from dan@dpcsys.com) Received: from localhost (dan@localhost) by cedb.dpcsys.com (8.8.5/8.8.2) with SMTP id VAA27919; Wed, 26 Nov 1997 21:05:13 GMT Date: Wed, 26 Nov 1997 13:05:13 -0800 (PST) From: Dan Busarow To: Christian cc: questions@FreeBSD.ORG Subject: Re: Mail problems In-Reply-To: <17EE3E869F2@colstate.edu> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk 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 ::= [ ] ::= * ::= [] ::= NET | GATEWAY | HOST | DOMAIN ::= *["."] ::= [*[]] 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