We tried to restart named, but it's is also failing and cannot start:
root@server [~]# service named status
rndc: recv failed: out of range
named is stopped
Maybe it's related to pdns bug/issue?
This status message will appear when PowerDNS (PDNS) is being used instead of BIND (named). The key message is "named is stopped".
Please utilize the below command to check the status and for restarts of PowerDNS.