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: carrental@rainbow.midroc-ceo.com host mx01.1and1.com [74.208.5.21] SMTP error from remote mail server after RCPT TO:: 550 Requested action not taken: mailbox unavailable carr@scinet.up.ac.za host kendy.up.ac.za [137.215.101.101] SMTP error from remote mail server after RCPT TO:: 530 Relaying not allowed carrfrankfzf600@myway.com all hosts for 'myway.com' have been failing for a long time (and retry time not reached) carrfrankfdf080@myway.com all hosts for 'myway.com' have been failing for a long time (and retry time not reached)