# -Mset and -bem
-exim userx@test.x usery@test.ex
+exim -f userz@test.ex -oMt userz userx@test.x usery@test.ex
From: Himself <himself@there.tld>
To: Yourself <you@here.tld>
Subject: The subject is not the object
-This is the body of the message.
+This is the body of the message. Make the line longer than any header.
****
sudo exim -be -Mset $msg1
From: $h_from:
message_size=$message_size
message_id=$message_id
message_exim_id=$message_exim_id
+max_received_linelength=$max_received_linelength
recipients=$recipients
****
write test-data
message_exim_id=$message_exim_id
message_linecount=$message_linecount
message_body_linecount=$body_linecount
+max_received_linelength=$max_received_linelength
headers -----------------
$message_headers