How can I create an automatic list of all list owners ?

You may do it easily using include feature. The basic idea is to automaticaly include in a list email of list owners from Sympa database. Create a list and edit list config :

• Admin
  • Edit List Config
    • Data sources

Then create a new SQL source according to the following screnshot :

The included source is an SQL query of emails from Sympa internal database. The SELECT close can be limited to a particular robot or to one of the roles list owners or:and list editors.

example :

SELECT user_admin FROM admin_table WHERE robot_admin = 'cru.fr' and role_admin = 'owner'