0
+ − 1 Subject: Warning: could not yet send message
+ − 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 yet be delivered to all recipients.
+ − 18 Delivery to the following recipients has been defered:
+ − 19
+ − 20 @failed_rcpts
+ − 21
+ − 22 Delivery will be tried again, until it is either successful or a
+ − 23 timeout has been reached. If the latter happens, you will get a
+ − 24 delivery failure notice.
+ − 25
+ − 26
+ − 27 This error message may give you a hint about what caused the
+ − 28 delay:
+ − 29
+ − 30 ${err_msg}
+ − 31
+ − 32 If you need help, write to <postmaster@${host_name}>.
+ − 33
+ − 34 The headers of your message follow attached:
+ − 35
+ − 36 --${uid}/${host_name}
+ − 37 Content-Description: Undelivered Message Headers
+ − 38 Content-Type: message/rfc822
+ − 39
+ − 40 @msg_headers
+ − 41
+ − 42 --${uid}/${host_name}--