My usual advice follows:
1) make sure that your owners know not to reply back
to all-request
2) that you address them as (something like):
To all list-owners of lists via LISTSERV@fqdn
3) what the date range of the announcement is
4) some might not know they are list-owners or who
you are
5) some might not be within your host's top domain
-- co-owner: INFOSYS, TQM-L, CPARK-L, ERAPPA-L, JANITORS, LDBASE-L, et -L
URL:mailto:[log in to unmask] "Never confuse the messenger with the message"