PPTP DNS problem

Hi, I created PPTP connection (interface) to company’s server. I defined two DNS servers (172.16.1.10, 172.17.1.10) in Profile of this connection. When connected, terminal command /ip dns print does not display them nor dns resolving to PPTP tunnel works. So I removed both DNS servers from PPP Profile and put them directly to IP → DNS → Servers (in Winbox). Now, terminal command /ip dns print displays them, but “>resolve myNtb.myDomain.loc” command does not work (neither ping to the name from connected win device) and works only when I explicitly define which DNS server should be used ( >resolve myNtb.myDomain.loc server 172.17.1.10 ). It’s then put in DNS cache for about 10 minutes and “>resolve myNtb.myDomain.loc” (and also ping from connected devices) works fine till cache record timeouts. What settings should I check so that RB tries to resolve the name from all DNS servers without explicitly specifying DNS server?