DHCP update external zone TSIG

[#1]

Hello everybody, 

I have a question about the DDNS to update an external zone via TSIG key.

I have two DDNS configured for my DHCP:

- One TSIG key for my internal zone

- One TSIG key to update a external zone located in the Infoblox of my client.

When the PC has finished the DHCP process, the A and TXT record are created correctly to the external authoritative zone.

But the PTR record is created in the reverse zone in my Infoblox. But this record has to be in the reverse zone in the Infoblox of my client. 

Can you give me advise to understand this comportment of Infoblox ?

Have a nice day,