--- /dev/null
+### -*-makefile-*-
+
+all::
+
+TARGETS += exim-filter
+exim-filter: exim-filter.in passwds Makefile
+ set -e; . ./passwds; umask 077; \
+ sed "s;@PASSWORD@;$$exim_db_passwd;g" $< >$@.new; \
+ mv $@.new $@
+
+CLEAN += $(TARGETS)
+all:: $(TARGETS)
+clean::; rm -f $(CLEAN)