CentOS - Sep 2009 - Bind 9.3.4-10.P1.el5_3.3 check-names and underscores

Updating old CentOS 4 DNS servers to CentOS 5, one of our zones has a number
of entries with underscores in.  Starting named results in the following
error and named refusing to start.

masters/example.com.db:33: mail_server.example.com: bad owner name
(check-names)

I've tried including

check-names master ignore;

in the options but this isn't making any difference.  I've read a lot of
debate on whether underscores should be allowed, but for the time being
we're stuck with these entries so I need to get this working.

Any thoughts?

Thanks, jc
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On Thu, Sep 17, 2009 at 2:14 PM, John Clement <jc at m4-p.com>
wrote:
> Updating old CentOS 4 DNS servers to CentOS 5, one of our zones has a
number
> of entries with underscores in.? Starting named results in the following
> error and named refusing to start.
>
> masters/example.com.db:33: mail_server.example.com: bad owner name
> (check-names)
>
> I've tried including
>
> check-names master ignore;
>
> in the options but this isn't making any difference.? I've read a
lot of
> debate on whether underscores should be allowed, but for the time being
> we're stuck with these entries so I need to get this working.
>
> Any thoughts?
Yes, don't use check-names or set it to warn. See chapter 06 of the ARM.

Or drop those names (although RFC 2181 allows those in labels, but it
also makes clear, that not any label must be allowed as a host name).

Ralph