Re: HELP - Domain resolution failed

> root@recursivo-a:~# dig icap-to.com.br > > ; <<>> DiG 9.10.3-P4-Ubuntu <<>> icap-to.com.br > ;; global options: +cmd > ;; Got answer: > ;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 32316 > ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1 > > ;; OPT PSEUDOSECTION: > ;

HELP - Domain resolution failed

Hello, We are running bind 9.10.3-P4-Ubuntu, Ubuntu 16.04.2 LTS, we face a recurring problem, every 3 or 4 hours Bind does not resolve the icap-to.com.br domain. After restarting the Bind service, resolves the host. Could someone give me a help, I could not find if the problem is in the settings.