In article <mailman.412.1370287583.20661.bind-us...@lists.isc.org>, hugo hugoo <hugo...@hotmail.com> wrote:
> Hello, > > Thanks for your answer. > I see ANY queries from my clients (we do not use open resolvers) That's strange. Client applications shouldn't use ANY queries, because you can't be sure of which record types are in the resolver's cache. I recall reading years ago that sendmail used ANY queries, presumably so it could get both the MX and A record for a name in one fell swoop. But this was wrong -- if the A record happened to be cached, there could still be an MX record on the auth server that should take precedence, but isn't yet cached. > I do not see why these kind of queries are present. > Moreover, the cache servers only anbswer with its cache content. > Is this normal or must the cache query the authoritztive server to fetch all > the records? That's normal. The only time it should recurse is when it doesn't have the name in its cache yet. -- Barry Margolin Arlington, MA _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
