diff --git a/Dockerfile b/Dockerfile
index 170408a..bf25c28 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,6 +6,7 @@ LABEL ImageName=""
 RUN apk add --no-cache exim
 
 COPY exim.conf /etc/exim
+RUN chmod 644 /etc/exim/exim.conf
 
 WORKDIR /etc/exim