I've a DC server (DC1) and ISP server (ISP1) in my environment. DNS in DC1 is AD-integrated and in ISP1 is secondary.
The issue now is some of the zones in the ISP1 server are unable to reload from master DC1 and the serial number is not updated. It returns error "zone not loaded by DNS server". I've checked the zone transfers setting in DC1 and it's configured properly. I've tried to re-create the problematic zones in ISP1 but it did not resolved the issue. I've asked my infra team and they suspected it's due to the SOA record not configured properly in master server DC1. I checked the SOA record is exists in DC1 but I'm unable to nslookup the SOA. Any ideas on how to further check on this issue?
Default Server: dc1.abc.com
> set type=soa
fish.com.cn canonical name = www.fish.com.cn