any requests

Tony Finch dot at
Thu Jun 6 14:47:25 UTC 2013

Barry Margolin <barmar at> wrote:
> In article <mailman.488.1370508226.20661.bind-users at>,
>  Tony Finch <dot at> wrote:
> > The ANY query does not trigger alias processing, so if there is a CNAME
> > chain you have to follow it yourself. This is a waste because if you made
> > an MX query in the first place the server would have given you the whole
> > chain without further queries.
> Unless the links in the CNAME chain are in the same bailiwick, isn't the
> client going to ignore them and follow them itself, to avoid cache
> poisoning?

The client is a stub resolver, the server is a recursive resolver. The
recursive server will either serve the CNAME chain from cache or chase it
safely if necessary,

f.anthony.n.finch  <dot at>
Forties, Cromarty: East, veering southeast, 4 or 5, occasionally 6 at first.
Rough, becoming slight or moderate. Showers, rain at first. Moderate or good,
occasionally poor at first.

More information about the bind-users mailing list