diff --git a/postfix/Dockerfile b/postfix/Dockerfile
index ba25800..a65539d 100644
--- a/postfix/Dockerfile
+++ b/postfix/Dockerfile
@@ -8,7 +8,8 @@ RUN \
  # Install Postfix
  && apk --no-cache add ca-certificates postfix s6 \
  # Cleanup
- && rm -r /etc/postfix/access /etc/postfix/aliases /etc/postfix/canonical /etc/postfix/dynamicmaps.cf* /etc/postfix/generic /etc/postfix/header_checks /etc/postfix/postfix-files.d /etc/postfix/relocated /etc/postfix/transport /etc/postfix/virtual
+ && sed -ir '/^(#.*)?$/d' /etc/postfix/aliases \
+ && rm -r /etc/postfix/access /etc/postfix/canonical /etc/postfix/dynamicmaps.cf* /etc/postfix/generic /etc/postfix/header_checks /etc/postfix/postfix-files.d /etc/postfix/relocated /etc/postfix/transport /etc/postfix/virtual
 
 COPY docker/ /