This is the first time that I try to install a Let's Encrypt certificate.
I installed Xeams 8.4 mail server on my QNAP TS-251D and when I went to create the certificate I was having problems due to port 80 being used by another process.
I was able to fix the port 80 issue and have been trying multiple times to create a certificate for mail.example.com using http xeams challenge.
After submitting, Xeams was asking me to restart the service, but it was crashing every time and the certificate wasn't being installed. Therefore after many attempts I removed Xeams and its configuration and reconfigured from scratch.
Now I get this error every time. How long do I have to wait before I can submit successfully?
Those, um, aren't TLDs. The TLD for both of those is .to; us.to and uk.to are both registered domains under the TLD of .to. And if both of those are used to give "free" subdomains to others, then they should both be listed on the public suffix list. But that's something that, AFAIK, only the registered domain owner can do.