R:250-mailleur.example.com, link (cleartext) ready, your IP/FQDN=[127.127.0.2/feed2.example.com]
S:MAIL FROM: <postmaster@example.com>
R:250 2.1.3 postmaster@example.com.. sender ok
+S:RCP TO: <postmaster@example.com>
+R:250 Address accepted
+#-------------------------------------------------------------------------
+#-sending data
+C:DATA
+R:354 Enter mail, end with "." on a line by itself
+D:Subject: test clmfd30 (Checking dynamic override)
+D:
+D:FIRST Line
+D:SECOND Line
+D:LAST Line
+D:.
+R:250 Message accepted for delivery
S:QUIT
R:221 2.0.0 Bye, closing connection...