intermittent resolving problem for some domains

[Niall O'Reilly]

At Wed, 19 Feb 2014 00:33:11 +0200,
Daniel Dawalibi wrote:
> 
> Kindly note that the number of recursive clients is increasing during
> the problem : recursive clients: 3700/14900/15000

  I think it's likely that you have a connectivity problem.

  I'ld suggest checking whether your server which is giving these
  messages can reach any of the root servers or even any of the
  external Internet.

  Best regards,
  Niall O'Reilly