While zone domain-named data is properly transferred from the zone primary master server to a zone secondary server, the reverse domain data is not being transferred. In other words, the host.rev file on the secondary is not being properly updated from the primary.
Syntax error in the secondary server's boot file.
Diagnosis and Solution:
Check the secondary server's boot file. Make sure that the primary server's IP address is listed for the reverse zone entries just as it is for the hosts data.
For example, the following boot file is incorrect because the primary server's IP address (18.104.22.168) is missing from the secondary in-addr.arpa record:
; ; /etc/named.boot file for dnssecondary directory /var/named secondary doc.com 22.214.171.124 dnshosts.bakup secondary 168.146.129.in-addr.arpa doc.rev.bakup
This is what the correct file should look like:
; ; /etc/named.boot file for dnssecondary directory /var/named secondary doc.com 126.96.36.199 dnshosts.bakup secondary 168.146.129.in-addr.arpa 188.8.131.52 doc.rev.bakup