0
+ − 1 Subject: Mail Delivery Failure Notice
+ − 2 From: MAILER-DAEMON@${host_name}
+ − 3 To: ${return_path}
+ − 4 MIME-Version: 1.0
+ − 5 Content-Type: multipart/mixed;
+ − 6 boundary="${uid}/${host_name}"
+ − 7
+ − 8 This is a MIME-encapsulated message.
+ − 9
+ − 10 --${uid}/${host_name}
+ − 11 Content-Description: Notification
+ − 12 Content-Type: text/plain
+ − 13
+ − 14 This message was sent to you by the mailer daemon (${package} ${version})
+ − 15 at ${host_name}.
+ − 16
+ − 17 Sorry, but your mail could not be delivered to all recipients.
+ − 18 Delivery to the following recipients failed permanently and has been given
+ − 19 up:
+ − 20
+ − 21 @failed_rcpts
+ − 22
+ − 23 This error message may give you a hint about what caused the
+ − 24 failure:
+ − 25
+ − 26 ${err_msg}
+ − 27
+ − 28 If you need help, write to <postmaster@${host_name}>.
+ − 29
+ − 30 Your message follows attached, including all headers:
+ − 31
+ − 32 --${uid}/${host_name}
+ − 33 Content-Description: Undelivered Message
+ − 34 Content-Type: message/rfc822
+ − 35
+ − 36 @msg_headers
+ − 37
+ − 38 @msg_body
+ − 39
+ − 40 --${uid}/${host_name}--