The forgeries you've seen in your news group are the product of an entity collectively known as "Dippy" to "news.admin-net-abuse.email" users. His attacks consists Posting Forgeries & Cross Posting to random (often conflicting) newsgroups with the "Followup-To" header set to NANAE. He's also been known to do direct attacks, by forging a NANAE regular's email addresses in a "reactive" post to several random news groups.
Because of this NANAE (and several regulars) have become flooded by these "What The F***!" posts, none of which are as easily filtered out as the tens of thousands of the Sporgeries a day we usually get from this little Slimer.
If you reply to any of these posts you're just adding to this distributed attack on our newsgroup:
(This has been a semi-automated reply... Post #590)