diff --git a/postfix/compose.yaml b/postfix/compose.yaml
index 266e40e..8033bf3 100644
--- a/postfix/compose.yaml
+++ b/postfix/compose.yaml
@@ -24,7 +24,7 @@ services:
 
       # Alleen jouw LAN/VLANs mogen relayed worden
       MYNETWORKS: "127.0.0.0/8 192.168.2.0/24 10.0.50.0/24 10.0.60.0/24"
-
+      LOG_FORMAT: plain
     volumes:
       # Postfix heeft schrijfruimte nodig; die doen we in named volumes
       - mail_spool:/var/spool/postfix