****
#
# single header signed, short message
-exim -DOPT=dkim -DLIST=From -odf a@test.ex
+exim -DOPT=dkim -DLIST=From -odf -oMt sender -f sender a@test.ex
From: nobody@example.com
From: second@example.com
****
#
# single header signed, long message
-exim -DOPT=dkim -DLIST=From -odf b@test.ex
+exim -DOPT=dkim -DLIST=From -odf -oMt sender -f sender b@test.ex
From: nobody@example.com
From: second@example.com