Would it be possible to have the list server add an identifier to the
subject line of each message it sends? So, for instance, this message with
the subject "Admin question" would be changed to something like "ARList:
Admin question". The reason I ask is that I usually get nothing but spam
from some of the poster's domains (hotmail and yahoo, to name just two) so
I have filters set up to move messages from those domains into a spam
folder. If messages from the list had a special identifier in the subject
I could modify my filters to look for that header and not treat any
messages with it as spam. Or perhaps it could be done with an "X-" header
entry. Is this easily doable?