diff --git a/postfix/config/master.cf b/postfix/config/master.cf
index 82c5c66..8018ed8 100644
--- a/postfix/config/master.cf
+++ b/postfix/config/master.cf
@@ -16,7 +16,7 @@
     -o smtpd_sender_login_maps=ldap:/config/ldap_senders.cf
     -o smtpd_client_restrictions=permit_mynetworks,permit_sasl_authenticated,reject
     -o smtpd_helo_restrictions=
-    -o smtpd_sender_restrictions=reject_non_fqdn_sender,reject_authenticated_sender_login_mismatch,reject_unauthenticated_sender_login_mismatch
+    -o smtpd_sender_restrictions=permit_mynetworks,reject_non_fqdn_sender,reject_authenticated_sender_login_mismatch,reject_unauthenticated_sender_login_mismatch
     -o smtpd_relay_restrictions=permit_mynetworks,permit_sasl_authenticated,reject
     -o smtpd_recipient_restrictions=reject_non_fqdn_recipient
     -o smtpd_data_restrictions=