443/tcp
TLS
first 2026-06-07 · last 2026-06-07
- TLS
- TLSv1.2
- Certificate for
- mailgw.leffer.de
- Issued by
- YR1
- Valid
- 2026-06-05 → 2026-09-03
Raw response
HTTP/1.1 400 Bad Request Server: nginx Date: Sun, 07 Jun 2026 10:17:39 GMT Content-Type: text/html; charset=utf-8 Content-Length: 650 Connection: close X-Frame-Options: SAMEORIGIN <html> <head><title>400 The plain HTTP request was sent to HTTPS port</title></head> <body> <center><h1>400 Bad Request</h1></center> <center>The plain HTTP request was sent to HTTPS port</center> <hr><center>nginx</center> </body> </html> <!-- a padding to disable MSIE and Chrome friendly error page --> <!-- a padding to disable MSIE and Chrome friendly error page --> <!-- a padding to disable MSIE and Chrome friendly error page --> <!-- a padding to disable MSIE and Chrome friendly error page --> <!-- a padding to disable MSIE and Chrome friendly error page --> <!-- a padding to disable MSIE and Chrome friendly error page -->