diff --git a/Dockerfile b/Dockerfile
index 366ca95..6aada50 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -18,6 +18,7 @@ RUN apk add shadow && useradd -rc "HUB Mail Relay" -M relay -NG mail -s /sbin/no
 RUN sed -i -e 's%^#mynetworks = hash:/etc/postfix/network_table%mynetworks = /etc/opendkim/signing/TrustedHosts%' /etc/postfix/main.cf
 COPY include /etc/postfix/include
 COPY ssl /etc/postfix/ssl
+RUN chmod 644 /etc/postfix/ssl/ca.crts /etc/postfix/include/*cf
 
 # Enable DKIM
 RUN mkdir /run/opendkim