If I have root access to a machine, what is the best way to set up mailing lists without having to create user accounts for the lists. For example, if I was to make a mailing list jhu-grads@domain, how can I do this without creating a system account called jhu and creating a mailing list, grads, under that system account? To me doing so seems like a security risk because then you have more passwords to remember and more ways for an attacker to break into a system.

Can anyone suggest a way to setup a bunch of mailing lists to be managed by the root user, or even one regular system user as long as the list email address doesnt need to be prefixed by username?

Thanks, Jason