diff --git a/01-nginx-setup.sh b/01-nginx-setup.sh
index 26ea644..b9cc86f 100755
--- a/01-nginx-setup.sh
+++ b/01-nginx-setup.sh
@@ -99,16 +99,18 @@ if nginx -t
 then
     certbot --nginx --non-interactive --agree-tos --no-eff-email -m ${eff_email_address} -d ${domain} \
         --staple-ocsp --hsts --no-redirect --renew-hook 'docker exec --interactive --tty myvemail /bin/ash -c "dovecot reload; postfix reload"'
-
-    # SSL
-    [ -d ./data/ssl/ ] || mkdir -p ./data/ssl
-    # Link certificate and private key
-    ln -s /etc/letsencrypt/live/${domain}/fullchain.pem ./data/ssl/tls.pem
-    ln -s /etc/letsencrypt/live/${domain}/privkey.pem ./data/ssl/tls.key
-    # dh.pem
-    [ -f ./data/ssl/dh.pem ] || openssl dhparam -out ./data/ssl/dh.pem 4096
-
-    # Cleanup
-    rm -f ${0}
+else
+    exit 1
 fi
 
+# SSL
+[ -d ./data/ssl/ ] || mkdir -p ./data/ssl
+ln -s /etc/letsencrypt/live/${domain}/fullchain.pem ./data/ssl/tls.pem
+ln -s /etc/letsencrypt/live/${domain}/privkey.pem ./data/ssl/tls.key
+[ -f ./data/ssl/dh.pem ] || openssl dhparam -out ./data/ssl/dh.pem 4096
+
+# Postwhite
+[ -f ./data/postwhite ] || touch ./data/postwhite
+
+# Cleanup
+rm -f ${0}