(IAAC) Spam problem (hopefully) solved

For the time being, I've made both netastrocatalog and the 'announce' list
"subscriber only": in other words, only subscribers (i.e., our fellow
astronomers) can post messages to either list. If anyone outside the list
has a VALID reason for posting, I have figured out how to approve these
posts remotely.
Hope this will help keep folks' mailboxes SPAM-free... :)
Clear skies for the weekend everybody!