I am interested in making a group that people from inside the company can email, but that people from outside cannot email to.
For example group Test would have user a, b, and c in it. User D could email Test@test.com and it would be distributed to a, b, and c, but joe@schmoe.com could not email Test@test.com.
I have been through the qmail documentation a couple of times, and am not sure if this can be done?
I am looking first for a solution that would not require installing anything, but I was thinking that maybe this could be done with some email list program.
Thanks for any help.