Open Enterprise Server 2015 (OES 2015) Linux Support Pack 1
DNS A records added to a zone were not becoming resolvable.
Even a reload of named would not cause them to resolve.
Delete the A records that contained invalid symbols in the name and restart named.
A records had been allow to dynamically be added to the zone and those A records contained the invalid % symbol in the name.
Here is an example:
38%11%c13%c7%a6%14-hillside 3600 IN A 192.168.254.1
3600 IN TXT "31e692d29ad09b6cd117efbd2179b59e0e"