The mailing list for listmasters using Sympa

[Riccardo Veraldi <address@concealed>]

Hi, we have this problem.

Hundreds of people are working on the same project; they are subscribed 
to different mailing lists according to the working area. Only the 
subscribers to a mailing list can receive messages, but all the people 
working on the project are authorized to post on all mailing list, even 
if they aren't subscribed.
To achieve this with majordomo, we simply created a different list 
containing all the people and in the conf file we specified that this 
list is autorized to send messages.
We would like to move to Sympa, but testing with Sympa, we didn't find a 
way to realize this.
And I do not wanto to insert this people as moderators in hte sympa 
configuration to solve the prolem.
May you help us?
Is there a way to fix our issue ?
thanks a lot

Rick