[Operators] DNS local caching resolvers

[Philipp Hancke]

Tomasz Sterna wrote:
> Dnia 2010-01-20, śro o godzinie 22:13 +0000, Dave Cridland pisze:
>> FYI, during our testing in the run up to jabber.org this time, I  
>> happened to notice what an impact DNS is to S2S setups, and that  
>> running a local caching resolver is a huge help to an XMPP service.
> 
> Assuming that your server implementation does not cache DNS resolver
> answers by itself.

iirc that did not work well with jabberd1.