Moon-Net and Nova-Net use an e-mail distribution system called "Mailman." It is configured to accept postings from members of the list ("subscribers") and to hold all messages from non-members for approval. This feature is a blessing because it filters out spam but it can cause problems for some legitimate members of the the lists.
Some people receive their e-mail through several sources. For example, they may route it through an address like email@example.com. or firstname.lastname@example.org. This is fine for receiving e-mail from Moon-Net or Nova-Net.
A problem can arises when you try to post a message to Moon-Net or Nova-Net. The Mailman robot checks the "From" part of your posting to see if it matches any entry in the membership list. If you originally subscribed to Moon-Net or Nova-Net as email@example.com but your "From" field now says firstname.lastname@example.org, then the robot thinks that your posting is from a non-member.
It's easy to correct the situation. Just follow these steps:
After receiving a confirmation message via e-mail from the subscription robot, send an e-mail to me providing your old e-mail address so I can remove it (otherwise you will receive two of everything). Be sure to indicate which list (Moon-Net or Nova-Net) you want modified.