Reserved subdomain
mta-sts.junlab.es
This host is dedicated to publishing the MTA-STS policy for junlab.es. It is used by mail servers to enforce TLS when delivering email to this domain.
Policy endpoint
/.well-known/mta-sts.txt
If you are here by accident, there is no web app running on this subdomain.
Quick check
curl -s https://mta-sts.junlab.es/.well-known/mta-sts.txt
For security, this page is noindex and contains no tracking.