diff --git a/data/Dockerfiles/sogo/Dockerfile b/data/Dockerfiles/sogo/Dockerfile
index b9db3c1c..a3a1308d 100644
--- a/data/Dockerfiles/sogo/Dockerfile
+++ b/data/Dockerfiles/sogo/Dockerfile
@@ -8,7 +8,6 @@ ENV GOSU_VERSION 1.9
 # Prerequisites
 RUN apt-get update && apt-get install -y --no-install-recommends \
 		apt-transport-https \
-		bind9-host \
 		ca-certificates \
 		cron \
 		gnupg \
diff --git a/data/web/thunderbird-plugins/build-plugins.sh b/data/web/thunderbird-plugins/build-plugins.sh
index 53199e61..03986b78 100755
--- a/data/web/thunderbird-plugins/build-plugins.sh
+++ b/data/web/thunderbird-plugins/build-plugins.sh
@@ -16,15 +16,11 @@ tar --strip-components=1 -C connector -xf connector.tar.gz
 # build custom integrator
 while read DOMAIN; do
 	echo "Building SOGo Integrator for $DOMAIN hosted on $MAILHOST"
-	PORT_NUM=$(dig -t srv  _autodiscover._tcp.$DOMAIN +short | tail -n 1 | awk '{print $3}')
-	if [[ -z ${PORT_NUM} ]]; then
-		PORT_NUM=443
-	fi
 	cd integrator
 	echo > defaults/preferences/site.js
 	mkdir -p custom/${DOMAIN}
 	cp -r custom/sogo-demo/* custom/${DOMAIN}/
-	sed -i "s/http:\/\/sogo-demo\.inverse\.ca/https:\/\/${MAILHOST}:${PORT_NUM}/g" custom/${DOMAIN}/chrome/content/extensions.rdf
+	sed -i "s/http:\/\/sogo-demo\.inverse\.ca/https:\/\/${MAILHOST}/g" custom/${DOMAIN}/chrome/content/extensions.rdf
 	sed -i "s/plugins\/updates\.php[?]/thunderbird-plugins.php?domain=${DOMAIN}\&/g" custom/${DOMAIN}/chrome/content/extensions.rdf
 	echo 'pref("sogo-integrator.autocomplete.server.urlid", "'${DOMAIN}'");' > custom/${DOMAIN}/defaults/preferences/site.js
 	echo 'pref("mail.collect_email_address_outgoing", false);' >> custom/${DOMAIN}/defaults/preferences/site.js
diff --git a/docker-compose.yml b/docker-compose.yml
index e8a7e0c4..853dbc36 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -143,7 +143,7 @@ services:
             - phpfpm
 
     sogo-mailcow:
-      image: mailcow/sogo:1.1
+      image: mailcow/sogo:1.0
       build: ./data/Dockerfiles/sogo
       depends_on:
         unbound-mailcow: