Kyle Jones <kyle_jones(a)wonderworks.com> writes:
The usual course of action for mailing lists is to allow posts only
from subscribers. That's the way to go, if we care that much.
I, for one, don't care that much. Like with spam filter, the problem
with disallowing non-subscriber messages is that legitimate messages
also get blocked. We've often had discussions that involved
non-subscribers in Cc, and I consider it a very useful feature.