Seraph has me stumped

We have a custom authenticator that works well. If you are authenticated, you are directed to the resource you requested. If you are not authenticated, you are directed to the login page. A few months ago we purchased service desk and I was tasked with modifying our custom authenticator to send unauthenticated users to the service desk portal.

I’ve managed to get unauthenticated users who request an explicit resource there by replacing the login.url in the seraph config file with “/servicedesk/”, but I cannot make it work for users who ask for just the domain name (https://my.jira.com/).

Any recommendations at all are most welcome. I’ve tried just about everything I can think of including, redirecting, forwarding, and dozens of different values for link.login.url in the seraph config file.