- followed by a message id; Exim loads the given message before doing the
- expansions, thus setting message-specific variables such as $message_size
- and the header variables. This feature is provided to make it easier to test
- expansions that make use of these variables. However, Exim must be called by
- an admin user when -Mset is used.
+ followed by a message id; Exim loads the given message from its spool before
+ doing the expansions, thus setting message-specific variables such as
+ $message_size and the header variables. The $recipients variable is
+ available. This feature is provided to make it easier to test expansions
+ that make use of these variables. However, Exim must be called by an admin
+ user when -Mset is used.
+
+8. Another similar new command-line option is called -bem. It operates like -be
+ except that it must be followed by the name of a file. For example:
+
+ exim -bem /tmp/testmessage
+
+ The file is read as a message (as if receiving a locally-submitted non-SMTP
+ message) before any of the test expansions are done. Thus, message-specific
+ variables such as $message_size and $h_from: are available. However, no
+ Received: header is added to the message. If the -t option is set,
+ recipients are read from the headers in the normal way, and are shown in the
+ $recipients variable. Note that recipients cannot be given on the command
+ line, because further arguments are taken as strings to expand (just like
+ -be).
+
+9. When an address is delayed because of a 4xx response to a RCPT command, it
+ is now the combination of sender and recipient that is delayed in subsequent
+ queue runs until its retry time is reached. You can revert to the previous
+ behavious, that is, delay the recipient independent of the sender, by
+ setting address_retry_include_sender=false in the smtp transport. However,
+ this can lead to problems with servers that regularly issue 4xx responses to
+ RCPT commands.
+