Once you have reviewed the mailing lists, you can participate in a discussion topic. Follow these directions to subscribe. Where the listname is the name of the mailing list. You will receive an e-mail indicating the status of your subscription request. You may be asked to confirm your subscription to the mailing list.
Confirmation is typical for high-volume lists.
Follow the instructions provided in the confirmation request. Once your subscription to the mailing list has been accepted, you will receive a welcome message. Save the welcome message for future reference, especially if you are not familiar with mailing lists. This message usually contains important information about the group that you may need later. Some mailing list server programs use the command join for subscribing to a mailing list.