Hi,
I come to you as I don't know what to do more to make SSL working on my domain handle by IONOS with redirection. (IONOS don't support customer running their own server)

On IONOS :

• I have a domain *.philaupatte.com
• I have SSL certificate (cer, key and intermediate)
• I have a redirection to the box of my ISP https://82.67.90.232:34443

On ISP Box :

• I have port forwarding from any IP source port:3480 to my apache server port:80
• I have port forwarding from any IP source port:34443 to my apache server port:443

On my APACHE2 server :
I have virtual host definition (quite simple)

ServerAdmin webmaster.administrator@free.fr
ServerName philaupatte.com
DocumentRoot /var/www/philaupatte.com

    ErrorLog ${APACHE_LOG_DIR}/error.log
    CustomLog ${APACHE_LOG_DIR}/access.log combined
    LogLevel debug

    SSLEngine on
    SSLUseStapling off

    <FilesMatch "\.(?:cgi|shtml|phtml|php)$">
            SSLOptions +StdEnvVars
    </FilesMatch>
    <Directory /usr/lib/cgi-bin>
            SSLOptions +StdEnvVars
    </Directory>

    SSLCertificateFile      /etc/ssl/philaupatte.com/philaupatte.com_ssl_certificate.cer
    SSLCertificateKeyFile   /etc/ssl/philaupatte.com/_.philaupatte.com_private_key.key
    SSLCertificateChainFile /etc/ssl/philaupatte.com/_.philaupatte.com_ssl_certificate_INTERMEDIATE.cer

All config is OK and server is starting without any error.

curl -i4 http://philaupatte.com working fine
HTTP/1.1 302 Found
Content-Type: text/html
Content-Length: 0
Connection: keep-alive
Keep-Alive: timeout=15
Date: Sun, 09 Jun 2024 06:57:29 GMT
Server: Apache
Cache-Control: no-cache
Location: https://82.67.90.232:34443

curl -i4 https://philaupatte.com fails
curl: (35) OpenSSL/3.0.11: error:0A000438:SSL routines::tlsv1 alert internal error

curl -i4 https://philaupatte.com fails -vvv

• Trying 217.160.0.238:443...
• Connected to www.philaupatte.com (217.160.0.238) port 443 (#0)
• ALPN: offers h2,http/1.1
• TLSv1.3 (OUT), TLS handshake, Client hello (1):
• CAfile: /etc/ssl/certs/ca-certificates.crt
• CApath: /etc/ssl/certs
• TLSv1.3 (IN), TLS alert, internal error (592):
• OpenSSL/3.0.11: error:0A000438:SSL routines::tlsv1 alert internal error
• Closing connection 0 curl: (35) OpenSSL/3.0.11: error:0A000438:SSL routines::tlsv1 alert internal error

Any suggestion will be more than welcome, I am fully stuck.

Thanks