diff --git a/Dockerfile b/Dockerfile
index 57de47a..215070a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -3,7 +3,7 @@ FROM alpine:edge
 RUN  \
     echo "http://dl-cdn.alpinelinux.org/alpine/edge/testing" >> /etc/apk/repositories && \
     apk -U add proftpd proftpd-mod_tls proftpd-utils openssl perl && \
-    mkdir -p /var/run/proftpd
+    mkdir -p /var/run/proftpd /etc/proftpd/custom.conf.d/
 
 COPY custom.conf /etc/proftpd/conf.d/custom.conf
 COPY run.sh /run.sh
diff --git a/README.md b/README.md
index 2886acc..047ae4e 100644
--- a/README.md
+++ b/README.md
@@ -48,9 +48,9 @@ services:
       - "50000-50500:50000-50500"
     volumes:
       - "/srv/ftps/auth:/auth"
-      - "/srv/fpts/extra.conf:/etc/proftpd/conf.d/extra.conf:ro"
+      - "/srv/ftps/conf:/etc/proftpd/custom.conf.d:ro"
       - "/srv/ftps/data:/home"
-      - "/etc/letsencrypt:/certs"
+      - "/etc/letsencrypt:/certs:ro"
     environment:
       - MASQUERADE=ftp.mydomain.com
       - TLS_CERT=/certs/live/ftp.mydomain.com/cert.pem
diff --git a/custom.conf b/custom.conf
index f574210..e74b320 100644
--- a/custom.conf
+++ b/custom.conf
@@ -23,3 +23,10 @@ MaxClientsPerHost 5
   TLSOptions                              NoSessionReuseRequired AllowClientRenegotiations
   TLSRequired                             on
 </IfModule>
+
+<IfModule mod_delay.c>
+  DelayOnEvent FailedLogin 5s
+  DelayTable /run/proftpd/proftpd.delay
+</IfModule>
+
+Include /etc/proftpd/custom.conf.d/