Most mailing list management software allows a list owner to configure a list to use unconfirmed subscriptions, however, it is A Bad Idea to choose this configuration, because it makes the list vulnerable to forged subscription requests, and places the list server at risk to be blacklisted. If your list is hosted on your personal workstation, your decision to use unconfirmed subscriptions will probably affect only you and your list subscribers. On the other hand, if your list is hosted on your service provider's list server, your decision may affect a very large number of people, and could put you in violation of your service provider's acceptable use policy. Our list service policy explicitly prohibits the use of unconfirmed open subscriptions.
Reference: <http://listserv.nd.edu/policies.html> -- Paul Russell Senior Systems Administrator University of Notre Dame Mark Giorgi wrote:
Everywhere that I've run into Majordomo in use, Majordomo is set to confirm each subscription request by requiring the would-be subscriber to respond to an automated subscription-confirmation email. Can this feature be turned off by the Majordomo administrator, thereby allowing people to be added directly to a list, without having to respond to a confirmation request?
