diff --git a/_multibuild b/_multibuild
new file mode 100644
index 0000000..6b0fe6c
--- /dev/null
+++ b/_multibuild
@@ -0,0 +1,4 @@
+<multibuild>
+  <package>postfix-bdb</package>
+</multibuild>
+
diff --git a/postfix.changes b/postfix.changes
index a111173..213db13 100644
--- a/postfix.changes
+++ b/postfix.changes
@@ -1,3 +1,9 @@
+-------------------------------------------------------------------
+Thu May  4 11:23:41 UTC 2023 - Dominique Leuenberger <dimstar@opensuse.org>
+
+- Add _multibuild to define 2nd spec file as additional flavor.
+  Eliminates the need for source package links in OBS.
+
 -------------------------------------------------------------------
 Tue Apr 18 18:14:49 UTC 2023 - Arjen de Korte <suse+build@de-korte.org>