[Observium] FDQN is email notices

I am using an FDQN for Observium.

When I get an email notification, it looks like:

How can I get the URL in the email to use the FDQN?

Note that the 10.14.1.76 is the internal IP of our instance. We do a NAT to an outside IP with a DNS record. So I’d like the URL to be http://observium.mydomain.com

Thanks,

-Robert