Underscore Character

kevinm at crt.com kevinm at crt.com
Mon Nov 8 18:09:04 UTC 1999

I've got another quick question about the "_" character.  I was in a two day
conference last week that showed the "_" being used in the SRV RR.  This
appears to be the default naming for SRV RR's.  Is this true and does this
mean that the "_" is ONLY valid for SRV RR's?


Kevin Martin
Bank of America
Firewall/DNS/SMTP/Network Admin.
kevinm at crt.com

-----Original Message-----
From: 2U [mailto:makun at minnanotabo.com]
Sent: Sunday, November 07, 1999 8:18 AM
To: comp-protocols-dns-bind at moderators.isc.org
Subject: Re: Underscore Character

Barry Margolin wrote:
> In article <3821C49B.41C67EA6 at hokaido.ivic.ve>,
> Jesus Quiroz  <jquiroz at hokaido.ivic.ve> wrote:
> >I'm installing bind 8.2.2, but I want to know if the underscore
> >character ( _ ) is valid characer for a hostname, because I'm
> >receiving the following error messages:
> No, it isn't.  This has been discussed many times, I suggest you search
> "underscore" in the www.deja.com archives.
> You can get rid of the checks by using the 'check-names' option in
> named.conf.
For NT running DNS, underscore is passed. Many NT guys then think it is
Some of our clients (technical guys?!) insist to have host name with

 Global Lang Provider
 URL --- http://www.g-lang.com
 Email - info at g-lang.com

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