split horizon while retaining A records

[InanZen]

I'm trying to set up a split horizon that would return local IPs of all the services for local clients, while still retaining the A records for the purposes of zone transfer to secondary NS - which is not a Technitium server.
It seems that if there is an A record than the APP record is ignored, but if I disable the A record than the APP record works. The global external to internal redirect is not possible since all global IPs are the same (public IP) but internal IPs are all different for each subdomain/service.
How to achieve this? Is it possible to create separate internal zone for internal clients (like views in bind9)?

[ShreyasZare]

Thanks for asking. You require using A record since the secondary servers are of a different vendor and thus cannot have just an APP record. In such situation, it is good to have separate DNS servers for authoritative and recursive functions. So, your current DNS server will work as authoritative and will have only an A record whereas clients will use a local Technitium DNS Server instance for recursive requirements.

Now, in this local DNS server that you have for the clients, you can create a Conditional Forwarder zone for the same zone name in question here and use "This Server" as the forwarder while creating the zone. Then you can add one or more A records which points to your internal IPs as required. This conditional forwarder zone will answer using the records in the zone when queried and when there are no matching records available, it will forward the request internally to "This Server" which will resolve it normally as if the forwarder zone did not exist.

[InanZen]

Alright, thank you.

[ShreyasZare]

You're welcome.