The list owner or LISTSERV postmaster needs to send the command
FREE xxxx-L
to LISTSERV in order to free the list. What this means is that the
list has exceeded the Daily-Threshold limit, which by default is 50
messages/day. The default can be raised by adding the line
* Daily-Threshold= xxx
to the list header, where xxx is the number of messages/day to be allowed
through before the list is held.
Nathan