If he's unable to take care of the situation, please let us know . He controls all the configuration details of the list, and can manually subscribe and unsubscribe users. If you have any questions about the list, you should contact him. If those don't help, we can . If this isn't working, you should contact your moderator.
Some moderators are more tolerant of straying off-topic than others, etc.
Your moderator should remove whoever made the SPAMming post, but that's really up to him to do. If things get out of hand, let us know. Often, if it's happening on the list, the moderator will already be taking the steps necessary to remove the offendor. If you're not satisfied with how things are being handled, let us know . Thus, they are disabled by default.