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Re: [rhelv5-list] named/BIND data file syntax; moving from Solaris 9 to RHEL5

On Thu, Mar 27, 2008 at 3:16 PM, Tim Evans <tkevans tkevans com> wrote:
> We have been running Sun's Solaris 9 BIND (reported as version 8.3.3) for some
>  years and are retiring the old hardware.  However, we came across an apparent
>  syntax issue in moving the RHEL's BIND.
>  Here's a piece of the old data file:
>  oldmail            IN      A
>                 IN      MX      100     mail

There are major differences between 8.x and 9.x in handling stuff. 8
was a bit loser in RFC checking and 9 is much more. MX records have to
point to A records and not CNAMES. 8 would allow CNAMES to act as A's
in various ways but the RFC did not allow it and 9 cracked down.

Hope that helps.

>  Note the empty first field of the second line.  Solaris BIND has never
>  complained about this. "mail" is published as a CNAME in the outside world,
>  since it is our main mail server.
>  However, RHEL's BIND barfs on this missing data field.  And, the MX record gets
>  lost and not sent upstream if we turn the Solaris BIND off.
>  What's wrong here? thanks.
>  --
>  Tim Evans, TKEvans.com, Inc.    |   5 Chestnut Court
>  UNIX System Admin Consulting    |   Owings Mills, MD 21117
>  http://www.tkevans.com/         |   443-394-3864
>  http://www.come-here.com/News/  |   tkevans tkevans com
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Stephen J Smoogen. -- CSIRT/Linux System Administrator
How far that little candle throws his beams! So shines a good deed
in a naughty world. = Shakespeare. "The Merchant of Venice"

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