diff --git a/pica-mail-mta/local_mailbox_unix_sasl/Dockerfile b/pica-mail-mta/local_mailbox_unix_sasl/Dockerfile
index 1fe03e5d84bde7707b09d02c315e8bd11216c9b0..37084ba0b159ec3d596ef88a1e709bfa618a6974 100644
--- a/pica-mail-mta/local_mailbox_unix_sasl/Dockerfile
+++ b/pica-mail-mta/local_mailbox_unix_sasl/Dockerfile
@@ -15,5 +15,6 @@ ENV LDAP_SERVER_HOSTNAME ldap.test.picasoft.net
 ENV LDAP_PORT 389
 
 COPY local_users /
+COPY saslauthd-postifx /etc/default/
 COPY entrypoint2.sh /
 ENTRYPOINT ["/entrypoint2.sh"]