mailcow-helper
Is it possible to use this to send emails to all@domain?
I can’t find how to make mailcom the possibility of group mailings within the domain, including all@domain. You also need the ability to limit the list of those who can write to these mailing groups - for example, only user1@domain can write to all@domain.
Is it already installed in mail com or does it need to be installed separately? How do I log in to Mailman 3 Web UI?
Is there any guide to working with mailman?