Posts from anon

[Joseph Lapolito <jml @ verio . net>]

I run a majordomo list called Meditech-l.  There is a cetain users posting
messages from and anon server to the list.  NOw I was under the impression
that only members of the list could post, however these anon messages with
a return address of me@somewhere.com, are getting distributed.

Is my assumption about only subscribers being able to post correct?

Is there any way to block these anon posts within majordomo?

Thanks
-Joe