skipping the iv parameter initialisation

etc/Makefile.in

@@ -26,7 +26,6 @@ INSTALL = @INSTALL@
 
 all:
 	sed -e 's%pidfile=.*%pidfile=$(localstatedir)/run/piler/piler.pid%g' \
-	-e 's%iv=.*%iv=@iv@%g' \
 	-e 's%pemfile=%pemfile=$(sysconfdir)/piler.pem%g' \
 	-e 's%workdir=.*%workdir=$(localstatedir)/piler/tmp%g' < $(srcdir)/example.conf | grep -v ^\; | grep '=' | sort > $(srcdir)/piler.conf
 

etc/example.conf

@@ -25,7 +25,7 @@ default_retention_days=2557
 ; this is a 16 character long vector
 ; after the installation you must not change it ever
 ; otherwise you can't access your emails
-iv=****************
+;iv=****************
 
 ; whether to encrypt messages (1) or not (0).
 ; Make sure to set this value to your needs right after installing piler,