I spun up a new VPS and then installed v61. I have the user data in a separate volume and when I attached it to the new instance (mounted on /home) and booted, everything still appeared to be fine but when I tried to open https://box.example.com/admin, there was an SSL problem. The cert it was using appeared to be self signed. I did not run rm -rf /home/user-data/ssl/* because /home/user-data/ssl/ is on the attached volume that was not attached until mailinabox was installed and no backup restore was required.
I’ve reverted to the previous instance with the volume reattached. There must be another self-signed cert somewhere that I need to delete. Any ideas where to find this self-signed cert?