We are unable to process the message from <psgml-user@...>
The email address used to send your message is not subscribed to this
group. If you are a member of this group, please be aware that you may
only send messages and manage your subscription to this group using
the email address(es) you have registered with Yahoo! Groups.
If you would like to subscribe to this group:
2. send email to PSGA-subscribe@...
For further assistance, please visit http://help.yahoo.com/help/us/groups/