I just want to make sure I understand your response.  So if I have one MAIL
file with 50 subscribers, and within the MAIL file  there is an invalid
address or blocked addresses.  Will the program deliver the rest on that
particular MAIL list, or will it fail because one of the addresses on the
MAIL list failed?   Is LISTSERV automatically collecting the invalid
addresses and returning to the SPOOL directory as another MAIL file or
returning the original as an undeliverable?  Should I get a message on the
Log files indicating that this happened?