There seems to be a problem with my local dns server resolving mirror.centos.org. I know something about dns but obviously not enough to figure out what might be wrong here or how to fix this in bind configs. The SERVFAIL errors below seem to be related to AAAA and MX queries for the domain. Please advise. TIA. # host mirror.centos.org 8.8.8.8 Using domain server: Name: 8.8.8.8 Address: 8.8.8.8#53 Aliases: mirror.centos.org has address 69.167.139.9 # host mirror.centos.org mirror.centos.org has address 66.109.26.212 Host mirror.centos.org not found: 2(SERVFAIL) Host mirror.centos.org not found: 2(SERVFAIL) # tail -F /var/named/chroot/var/named/data/named.run error (FORMERR) resolving 'mirror.centos.org/AAAA/IN': 85.12.30.226#53 error (FORMERR) resolving 'mirror.centos.org/AAAA/IN': 93.113.36.66#53 error (FORMERR) resolving 'mirror.centos.org/AAAA/IN': 94.46.190.42#53 error (FORMERR) resolving 'mirror.centos.org/AAAA/IN': 85.12.30.226#53 error (FORMERR) resolving 'mirror.centos.org/AAAA/IN': 93.113.36.66#53 error (FORMERR) resolving 'mirror.centos.org/AAAA/IN': 94.46.190.42#53 error (FORMERR) resolving 'mirror.centos.org/MX/IN': 85.12.30.226#53 error (FORMERR) resolving 'mirror.centos.org/MX/IN': 93.113.36.66#53 error (FORMERR) resolving 'mirror.centos.org/MX/IN': 94.46.190.42#53 error (FORMERR) resolving 'mirror.centos.org/MX/IN': 85.12.30.226#53 error (FORMERR) resolving 'mirror.centos.org/MX/IN': 93.113.36.66#53 error (FORMERR) resolving 'mirror.centos.org/MX/IN': 94.46.190.42#53