[csc-industry] Mail delivery failed: returning message to sender

This message was created automatically by mail delivery software. A message that you sent could not be delivered to one or more of its recipients. This is a permanent error. The following address(es) failed: csc-industry@csclub.uwaterloo.ca host mail.csclub.uwaterloo.ca [129.97.134.52] SMTP error from remote mail server after RCPT TO:<csc-industry@csclub.uwaterloo.ca>: 553 5.7.1 <csc-industry@csclub.uwaterloo.ca>: Sender address rejected: not logged in