SSL_ERROR_RX_RECORD_TOO_LONG on a fresh ISPConfig (ubuntu 20.04.2)

Hello,

I get SSL_ERROR_RX_RECORD_TOO_LONG when trying to reach my website in ssl.
When I check SSL and Let's encrypt option in website configuration this not stay checked...

Here is result of cat htf_report.txt :

Code:

##### SERVER #####
IP-address (as per hostname): ***.***.***.***
[WARN] could not determine server's ip address by ifconfig
[INFO] OS version is Ubuntu 20.04.2 LTS

[INFO] uptime:  13:37:35 up  2:04,  1 user,  load average: 0,46, 0,35, 0,29

[INFO] memory:
              total       utilisé      libre     partagé tamp/cache   disponible
Mem:           23Gi       1,6Gi        19Gi        11Mi       2,4Gi        21Gi
Partition d'échange:       1,0Gi          0B       1,0Gi

[INFO] systemd failed services status:
  UNIT LOAD ACTIVE SUB DESCRIPTION
0 loaded units listed.

[INFO] ISPConfig is installed.

##### ISPCONFIG #####
ISPConfig version is 3.2.5


##### VERSION CHECK #####

[INFO] php (cli) version is 7.4.3
[INFO] php-cgi (used for cgi php in default vhost!) is version 7.4.3

##### PORT CHECK #####

[WARN] Port 465 (SMTP server SSL) seems NOT to be listening

##### MAIL SERVER CHECK #####

[WARN] I found no "submission" entry in your postfix master.cf
[INFO] this is not critical, but if you want to offer port 587 for smtp connections you have to enable this.
[WARN] I found no "smtps" entry in your postfix master.cf
[INFO] this is not critical, but if you want to offer SSL for smtp (not TLS) connections you have to enable this.

##### RUNNING SERVER PROCESSES #####

[INFO] I found the following web server(s):
        Apache 2 (PID 212410)
[INFO] I found the following mail server(s):
        Postfix (PID 211044)
[INFO] I found the following pop3 server(s):
        Dovecot (PID 211092)
[INFO] I found the following imap server(s):
        Dovecot (PID 211092)
[INFO] I found the following ftp server(s):
        PureFTP (PID 211141)

##### LISTENING PORTS #####
(seulement              ()
Adresse         (distante)
***.***.***.***:53              (211148/named)
[localhost]:53          (211148/named)
[anywhere]:21           (211141/pure-ftpd)
***.***.***.***:53              (667/systemd-resolve)
[anywhere]:22           (757/sshd:)
[localhost]:953         (211148/named)
[anywhere]:25           (211044/master)
[anywhere]:993          (211092/dovecot)
[anywhere]:995          (211092/dovecot)
[localhost]:10023               (28701/postgrey)
[localhost]:10024               (211079/amavisd-new)
[localhost]:10025               (211044/master)
[localhost]:10026               (211079/amavisd-new)
[localhost]:10027               (211044/master)
[localhost]:11211               (45862/memcached)
[anywhere]:110          (211092/dovecot)
[anywhere]:143          (211092/dovecot)
*:*:*:*::*922b:34ff:fe9a:53             (211148/named)
*:*:*:*::*:53           (211148/named)
*:*:*:*::*:21           (211141/pure-ftpd)
*:*:*:*::*:22           (757/sshd:)
*:*:*:*::*:25           (211044/master)
*:*:*:*::*:953          (211148/named)
*:*:*:*::*:443          (212410/apache2)
*:*:*:*::*:993          (211092/dovecot)
*:*:*:*::*:995          (211092/dovecot)
*:*:*:*::*:10024                (211079/amavisd-new)
*:*:*:*::*:10026                (211079/amavisd-new)
*:*:*:*::*:3306         (210772/mysqld)
[localhost]10           (211092/dovecot)
[localhost]43           (211092/dovecot)
*:*:*:*::*:8080         (212410/apache2)
*:*:*:*::*:80           (212410/apache2)
*:*:*:*::*:8081         (212410/apache2)




##### IPTABLES #####
Chain INPUT (policy ACCEPT)
target     prot opt source               destination
f2b-sshd   tcp  --  [anywhere]/0            [anywhere]/0            multiport dports 22

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination

Chain f2b-sshd (1 references)
target     prot opt source               destination
REJECT     all  --  ***.***.***.***        [anywhere]/0            reject-with icmp-port-unreachable
RETURN     all  --  [anywhere]/0            [anywhere]/0




##### LET'S ENCRYPT #####
Certbot is installed in /usr/bin/letsencrypt

I don't know where to start to find what causing this error...
If any log file needed to help me ask me !
Regards

 

I have used this one : https://www.howtoforge.com/tutorial...l-pureftpd-bind-postfix-doveot-and-ispconfig/

 

I will restart from scratch with a fresh server install and this : https://www.howtoforge.com/ispconfig-autoinstall-debian-ubuntu/

Sorry for disturbance
and thanks