I did a search and found a couple of other references to this but nothing suggesting a fix. I've added a url which passes a DNS lookup but when I test the http and https I get:
Testing on node {my website}: failed with 'NotAvailable' status
Access denied, authorization failed.
I can browse the site from the server and it also works from everywhere else I've tried it. Can't figure out what might be stopping it from working in Solarwinds. Any ideas?