invalid hostname

[Marc Powell]

Looks to me like those rules are either no longer valid or are not being adhered to by any of the registrars...

http://www.dk-hostmaster.dk/dkhostcms/bs?query=2aa.dk&pageid=82&action=cmsview&lang=da

http://www.networksolutions.com/cgi-bin/whois/whois?STRING=2go.com&SearchType=do

--

Marc

> -----Original Message-----
> From: Patrick LeBoutillier [mailto:patrick_leboutillier at hotmail.com]
> Sent: Tuesday, May 06, 2003 8:25 AM
> To: Simon Østengaard
> Cc: nagios-users at lists.sourceforge.net
> 
> Here is the code that is causing you problems:
> 
> /* from RFC-1035
>  *
>  * The labels must follow the rules for ARPANET host names.  They must
>  * start with a letter, end with a letter or digit, and have as interior
>  * characters only letters, digits, and hyphen.  There are also some
>  * restrictions on the length.  Labels must be 63 characters or less. */
> 
> int
> is_hostname (char *s1)
> {
>         if (!s1 || strlen (s1) > 63) {
>                 return FALSE;
>         }
>         if (strcspn (s1,
> "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUWVXYZ0123456789-.")
> != 0) {
>                 return FALSE;
>         }
>         if (strspn (s1, "0123456789-.") == 1) {
>                 return FALSE;
>         }
>         while ((s1 = index (s1, '.'))) {
>                 s1++;
>                 if (strspn (s1, "0123456789-.") == 1) {
>                         return FALSE;
>                 }
>         }
>         return TRUE;
> }
> 
> 
> There seems to be some standard (RFC-1035) for hostnames that does not
> allow
> a number as the first character in a hostname label.
> 
> Maybe you can create an alias for that host, use the IP address or change
> the code
> and recompile your plugins. I suspect the Perl utils.pm will have the same
> check.
> 
> 
> Cheers,
> 
> Patrick
> 
> ---------------------
> Patrick LeBoutillier
> Laval, Quebec, Canada
> ----- Original Message -----
> From: "Simon Østengaard" <simon at ostengaard.dk>
> To: <nagios-users at lists.sourceforge.net>
> Sent: Tuesday, May 06, 2003 9:00 AM
> Subject: [Nagios-users] invalid hostname
> 
> 
> > Hi
> > I use the check_smtp plugin  ver. 1.3.0
> >
> > The plugin refuses to check a host that contains a number in the
> > beginning of the hosts fully-qualified-domain-name. I.e mail.2aa.dk.
> >
> > [root at columbia nagios-plugins-1.3.0]# ./plugins/check_smtp -H
> mail.2aa.dk
> > Invalid host name
> > Usage: check_smtp -H host [-e expect] [-p port] [-f from addr] [-w warn]
> > [-c crit] [-t timeout] [-v]
> >        check_smtp --help
> >        check_smtp --version
> > [root at columbia nagios-plugins-1.3.0]# telnet mail.2aa.dk 25
> > Trying 80.80.7.208...
> > Connected to mail.2aa.dk.
> > Escape character is '^]'.
> > 220 mail.2aa.dk ESMTP Tue, 06 May 2003 15:02:58 +0200
> >
> >
> > Any help will be usefull.
> >
> > Best regards.
> > Simon
> >
> >
> >
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> >
> 
> 
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