+This is a simple test.
+.
+??? 250
+QUIT
+??? 221
+****
+#
+# This should pass.
+# - sha256, 1024b
+# Mail original in aux-fixed/4500.msg1.txt
+# Sig generated by: perl aux-fixed/dkim/sign.pl --algorithm=rsa-sha256 \
+# --method=simple/simple < aux-fixed/4500.msg1.txt
+client 127.0.0.1 PORT_D
+??? 220
+HELO xxx
+??? 250
+MAIL FROM:<CALLER@bloggs.com>
+??? 250
+RCPT TO:<a@test.ex>
+??? 250
+DATA
+??? 354
+DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=test.ex; h=from:to
+ :date:message-id:subject; s=sel; bh=3UbbJTudPxmejzh7U1Zg33U3QT+1
+ 6kfV2eOTvMeiEis=; b=xQSD/JMqz0C+xKf0A1NTkPTbkDuDdJbpBuyjjT9iYvyP
+ Zez+xl0TkoPobFGVa6EN8+ZeYV18zjifhtWYLSsNmPinUtcpKQLG1zxAKmmS0JEh
+ +qihlWbeGJ5+tK588ugUzXHPj+4JBW0H6kxHvdH0l2SlQE5xs/cdggnx5QX5USY=
+From: mrgus@text.ex
+To: bakawolf@yahoo.com
+Date: Thu, 19 Nov 2015 17:00:07 -0700
+Message-ID: <qwerty1234@disco-zombie.net>
+Subject: simple test
+