en.dtm.pub TLS certificate appears valid (could not reproduce issue)

[chenrui333]

Environment

• Host: en.dtm.pub
• Checked on: 2026-02-18
• Tool: curl

Repro command

curl -v https://en.dtm.pub/

Observed output (request + TLS summary)

* Host en.dtm.pub:443 was resolved.
*   Trying 43.132.164.55:443...
* Connected to en.dtm.pub (43.132.164.55) port 443
* SSL connection using TLSv1.2 ...
* Server certificate:
*  subject: CN=en.dtm.pub
*  start date: Aug  6 14:14:11 2025 GMT
*  expire date: Sep  6 14:14:11 2026 GMT
*  subjectAltName: host "en.dtm.pub" matched cert's "en.dtm.pub"
*  issuer: C=US; O=Leocert LLC; CN=Leocert TLS Issuing RSA CA 1
*  SSL certificate verify ok.
> GET / HTTP/1.1
> Host: en.dtm.pub
> User-Agent: curl/8.7.1
> Accept: */*
< HTTP/1.1 200 OK
< Date: Wed, 18 Feb 2026 ...
< Content-Type: text/html

Result

• TLS handshake succeeded.
• Certificate validation succeeded (SSL certificate verify ok).
• HTTP request completed with 200 OK and normal site HTML.

I can’t reproduce a cert problem from this machine; if you still see failures, please share client/network details (CA store, firewall/proxy, country/region, and full curl -v output) so we can pinpoint if it’s environment-specific.