[ukc-polo] Posting restrictions?

[Scott Henry]

The spam to this list has gotten to the point where action must be 
taken.  We recently changed other UKC lists to accept messages only from 
registered list members, which has stopped the spam.  I would like to do 
the same to this list.  Imposing this restriction would mean that you 
could only post a message to the list from the email address you used to 
register, and that people who are not on the list could not post (but 
they don't get our messages anyway?).

Does anybody have reasons not to restrict list postings?

Scott