On Tue, 2009-05-19 at 10:43 +0200, Ralf Hildebrandt wrote: > * Steve <steve.h...@digitalcertainty.co.uk>: > > > > Where is this behaviour documented? > > > Good question. If it is not surely it would make a sensible feature > > request? Clearly as an expert on Postfix perhaps you can tell *ME* how > > to get Postfix to stop attempting rubbish DNS lookups rather than try > > and start an argument with me? > > I THINK it is possible, but that would disable it for all lookups, > which is not wanted. > > > Asking the question with the BIND list (which I did before coming here) > > clearly put the blame on the attempting client here - AKA 'Postfix'. > > Postfix is asking stupid questions to public DNS servers. > > Postfix does not perform DNS queries, that is done by your local > (libc) resolver. > > > They are nonsensical in my network context. That is, small class C with > > a handful of hosts, external DNS. Not only are they nonsensical queries > > to make, they are also a total waste of network resources and > > bandwidth. The fix here is to stop the client making them, not to stop > > the resolver from answering them. > > Usually, you would make BIND responsible for those local network, e.g. > with dummy zones. powerdns does this automatically (which seems to be > beneficial for your setup) > Indeed, Postfix does *not* perform DNS queries. However, it asks the question in the first instance that results in the lookup. This is just a case of arguing semantics. It is close to buggy behaviour IMHO. If it produces unintended results = bug.
Thanks again.
