I have created a new linux email server using Centos (Redhat Enterprise). The management wants me to establish an easy way to create lists/groups (I don't know the correct term for what is needed/wanted). The purpose would be for an email to be sent to a group of people without having to cc everyone. These groups may be broken up in teams, projects, departments, everone, etc.
Webmin and Usermin are installed on the email server and it is working properly. How could I use these tools to create and maintain these groups as needed?
Thank-you in advance.