"Unknown host: peer not authenticated" (RESOLVED BUT OPEN FOR REFERENCE)

[artknight]

I am getting this error msg when I try to send.

"Unknown host: peer not authenticated"

[DominicWatson]

We found this too. The issue seems to be around some certificate or TLS configuration change by MailGun. You can resolve this issue by:

1. Log in to Lucee server admin and navigate to "SSL Certificates"
2. Enter "mailgun.com" in the Host field (without the quotes)
3. Hit "list" button
4. Hit "install" button

See thread here: https://groups.google.com/forum/?utm_medium=email&utm_source=footer#!msg/lucee/BPm8vYdgkPQ/5pO005wbEAAJ

Going to leave this issue open for others experiencing the problem.