ISPConfig 3 and https mailman configuration.

Hi everyone,
I need some help about configuration of mailman on https ISPConfig 3 installation.
I installed ISPConfig 3 version 3.1.1p1 on Debian 8 and I followed "The Perfect Server – Debian 8.4 Jessie (Apache2, BIND, Dovecot, ISPConfig 3.1)" to deploy it.
After the first installation I securized my control panel with a Let's Encrypt certificate con my domain and change the default address of my control panel to "https: // cp.mydomain.tld".
Then I force http to https redirection on "http: // cp.mydomain.tld"
I force http to https redirection to webmail and phpmyadmin too and all work properly.
But, I want to force redirection http to https with mailman too and I have two problem:
1) The URL "https: // cp.mydomain.tld/cgi-bin/mailman/admin/mailman" doesn't work with the following error:
Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.
Please contact the server administrator at webmaster@localhost to inform them of the time this error occurred, and the actions you performed just before this error.
More information about this error may be available in the server error log.
In the error log I see a suexec error that say:
[2016-11-17 11:05:04]: uid: (5003/ispconfig) gid: (5004/ispconfig) cmd: admin
[2016-11-17 11:05:04]: command not in docroot (/usr/lib/cgi-bin/mailman/admin)
Where can I add this path and is this the correct way to fix this problem?
2) I want to force http to https redirection on all request to mailman, how can I do that?
Generally I want to use mailman only in https and not in http.

Another question:
the path to use mailman is /cgi-bin/mailman/......
Is this path available on all vhosts on the ISPConfig website or only on the main cp.mydomain.tld website?

Thank for your help.
Giuseppe

 

If there is any solution to this - can you post it here, please?

 

First off please don't hijack old Threads like this.

A solution to what exactly? What is your setup and what are you trying to do? Are there any errors?