+#
+#
+#
+#
+# helo name gets used when mailfrom is null
+client HOSTIPV4 PORT_S
+??? 220
+helo passme.helo.example.com
+??? 250
+mail from:<>
+??? 250
+rcpt to:<fred@test.ex>
+??? 250
+quit
+****
+#
+# helo name is overridden when a mailfrom is set
+client HOSTIPV4 PORT_S
+??? 220
+helo passme.helo.example.com
+??? 250
+mail from:<failme@example.com>
+??? 250
+rcpt to:<fred@test.ex>
+??? 550
+quit
+****
+#