the examples in the sendmail 8.6.12 sources for using procmail as the
main delivery agent have it set up without the 'm' mailer flag which
means that mail to multiple recipients means multiple invocations of
procmail. is this strictly necessary? the man page for procmail seems
to indicate that it should work. are there security or other issues
with adding the 'm' flag in? we have things working quite well now
without the 'm', but we do have a lot of people on a lot of mailing
lists so we'd like to eliminate as much overhead as possible.