Problem with a certain domain

[Thomas Barth]

Hello,

unfortunately, today I had to restart bind9 for the third time in an 
attempt to send a newsletter to get rid the communication error, 
although with a query response of 1800 msecs. Is it possible to 
configure bind9 so that a public DNS service (e.g. 9.9.9.9) is used for 
the particular domain and bind9 for everything else? Because dig 
@9.9.9.9 s1._domainkey.mg-esp-prod-eu-eu.mallorcazeitung.es always works 
with a good response.