Reverse DNS (rDNS) or PTR record for external reserved IP

[javiercarpio]

Hi community,

I am working to configure a SMTP service on GKE. A load balancer type service, is creating a external IP. But the issue is that I need to configure PTR record for this IP, this functionality is only available for VM network interfaces:
Create a PTR record for a VM instance  |  Compute Engine Documentation  |  Google Cloud

Is there a way to request to Google the configuration of the PTR, to enable SMTP validation? 

[Marvin_Lucero]

Hi @javiercarpio ,

You are correct, this PTR records can only be added to the primary network interface of a VM instance. It is not available for load balancer frontends, Cloud NAT, or other non-VM IP addresses. As such, using PTR records with the IP Address of a Load Balancer is not possible.

There is already a feature request for this. It does not have any ETA but clicking on the +1 in the top right will increase the popularity of the request and thus increase the chances of implementing this feature.