Sendmail error - cannot mail directly to files
You called sendmail, but told it that you wanted to deliver mail to /usr/sbin/sendmail, then -v, and then [email protected]. Only the last email seems to have gone through; the other two obviously bounced.
It's not clear why you wrote the command line that way, but I guess it's just a mistake. You should have written sendmail -v [email protected] or something similar.