Hello, I setup a Distribution List and wanted to implement the automatic subscription using the mail interface and a user from my domain (mydomain.com) can subscribe sending:
But when a someone want to subscribe from another e-mail account (example firstname.lastname@example.org) the Distribution List reply with an e-mail saying is not valid or non existent user. In the properties of the Distribution List I set:
Group Subscription Type = Open
Restrict membership to the group's domain = No
So I wonder if I am missing something or this could not be done this way, and has to be manually added all the external users.