How to Moderate Non Subscribers
Sometimes you want non members to be able to post to your mailing list
If you know who these people are, you can add their email addresses to the Post Only list.
And when they send a message, it will immediately go out to the mailing list.
If you don't know who wants to post in advance
Then you can turn on the Moderate Non Subscribers option.
And any message from unknown email addresses will be routed to the list moderator(s) for approval.
If Moderate Non Subscribers is set to No
Then messages from people that are not subscribers or on vacation or on the Post Only list, will be rejected back to the sender.