diff --git a/data/Dockerfiles/dovecot/Dockerfile b/data/Dockerfiles/dovecot/Dockerfile
index 88b72b6d..54a24690 100644
--- a/data/Dockerfiles/dovecot/Dockerfile
+++ b/data/Dockerfiles/dovecot/Dockerfile
@@ -2,22 +2,28 @@ From ubuntu:xenial
 MAINTAINER Andre Peters <andre.peters@servercow.de>
 
 ENV DEBIAN_FRONTEND noninteractive
+ENV LC_ALL C
 
-RUN apt-get update \
-	&& apt-get -y install dovecot-common \
-		dovecot-core \
-		dovecot-imapd \
-		dovecot-lmtpd \
-		dovecot-managesieved \
-		dovecot-sieve \
-		dovecot-mysql \
-		dovecot-pop3d \
-		dovecot-dev \
-		wget \
-		curl \
-		build-essential \
-		autotools-dev \
-		automake
+RUN dpkg-divert --local --rename --add /sbin/initctl \
+    && ln -sf /bin/true /sbin/initctl \
+    && dpkg-divert --local --rename --add /usr/bin/ischroot \
+    && ln -sf /bin/true /usr/bin/ischroot
+
+RUN apt-get update
+RUN apt-get -y install dovecot-common \
+	dovecot-core \
+	dovecot-imapd \
+	dovecot-lmtpd \
+	dovecot-managesieved \
+	dovecot-sieve \
+	dovecot-mysql \
+	dovecot-pop3d \
+	dovecot-dev \
+	wget \
+	curl \
+	build-essential \
+	autotools-dev \
+	automake
 
 WORKDIR /tmp
 RUN wget http://hg.dovecot.org/dovecot-antispam-plugin/archive/tip.tar.gz -O - | tar xvz  \
@@ -31,6 +37,7 @@ COPY ./rspamd-pipe /usr/local/bin/rspamd-pipe
 COPY ./docker-entrypoint.sh /
 
 RUN chmod +x /usr/local/bin/rspamd-pipe
+
 RUN groupadd -g 5000 vmail
 RUN useradd -g vmail -u 5000 vmail -d /var/vmail
 
@@ -38,3 +45,5 @@ EXPOSE 24 10001
 
 ENTRYPOINT ["/docker-entrypoint.sh"]
 CMD ["/usr/sbin/dovecot", "-F"]
+
+RUN apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
diff --git a/data/Dockerfiles/pdns/Dockerfile b/data/Dockerfiles/pdns/Dockerfile
index 7a37447a..b56dcf9c 100644
--- a/data/Dockerfiles/pdns/Dockerfile
+++ b/data/Dockerfiles/pdns/Dockerfile
@@ -1,9 +1,15 @@
-FROM debian:jessie
+FROM ubuntu:xenial
 MAINTAINER Andre Peters <andre.peters@debinux.de>
 
 ENV DEBIAN_FRONTEND noninteractive
+ENV LC_ALL C
 
-RUN echo 'deb http://repo.powerdns.com/debian jessie-rec-40 main' > /etc/apt/sources.list.d/pdns.list
+RUN dpkg-divert --local --rename --add /sbin/initctl \
+    && ln -sf /bin/true /sbin/initctl \
+    && dpkg-divert --local --rename --add /usr/bin/ischroot \
+    && ln -sf /bin/true /usr/bin/ischroot
+
+RUN echo 'deb http://repo.powerdns.com/ubuntu xenial-rec-40 main' > /etc/apt/sources.list.d/pdns.list
 
 RUN echo 'Package: pdns-*\n\
 Pin: origin repo.powerdns.com\n\
@@ -16,3 +22,5 @@ RUN apt-key adv --fetch-keys http://repo.powerdns.com/FD380FBB-pub.asc \
 CMD ["/usr/sbin/pdns_recursor"]
 
 EXPOSE 53/udp
+
+RUN apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
diff --git a/data/Dockerfiles/postfix/Dockerfile b/data/Dockerfiles/postfix/Dockerfile
index 60c33cc0..bc6015d7 100644
--- a/data/Dockerfiles/postfix/Dockerfile
+++ b/data/Dockerfiles/postfix/Dockerfile
@@ -2,24 +2,31 @@ From ubuntu:xenial
 MAINTAINER Andre Peters <andre.peters@servercow.de>
 
 ENV DEBIAN_FRONTEND noninteractive
+ENV LC_ALL C
+
+RUN dpkg-divert --local --rename --add /sbin/initctl \
+	&& ln -sf /bin/true /sbin/initctl \
+	&& dpkg-divert --local --rename --add /usr/bin/ischroot \
+	&& ln -sf /bin/true /usr/bin/ischroot
 
 RUN apt-get update
-
-RUN apt-get -y install supervisor \
+RUN apt-get install -y --no-install-recommends supervisor \
 	postfix \
 	sasl2-bin \
 	postfix \
 	postfix-mysql \
 	postfix-pcre \
-	rsyslog \
+	syslog-ng \
+	syslog-ng-core \
 	ca-certificates
 
+RUN sed -i -E 's/^(\s*)system\(\);/\1unix-stream("\/dev\/log");/' /etc/syslog-ng/syslog-ng.conf
+
 COPY supervisord.conf /etc/supervisor/supervisord.conf
 COPY postfix.sh /opt/postfix.sh
 
-RUN groupadd -g 5000 vmail
-RUN useradd -g vmail -u 5000 vmail -d /var/vmail
-
 EXPOSE 588
 
 CMD exec /usr/bin/supervisord -c /etc/supervisor/supervisord.conf
+
+RUN apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
diff --git a/data/Dockerfiles/postfix/supervisord.conf b/data/Dockerfiles/postfix/supervisord.conf
index f49940fd..4268899d 100644
--- a/data/Dockerfiles/postfix/supervisord.conf
+++ b/data/Dockerfiles/postfix/supervisord.conf
@@ -1,11 +1,11 @@
 [supervisord]
 nodaemon=true
 
-[program:rsyslog]
-command=/usr/sbin/rsyslogd -n
-autostart=true
-autorestart=true
+[program:syslog-ng]
+command=/usr/sbin/syslog-ng --foreground  --no-caps
 redirect_stderr=true
+autostart=true
+stdout_syslog=true
 
 [program:postfix]
 command=/opt/postfix.sh
diff --git a/data/Dockerfiles/rmilter/Dockerfile b/data/Dockerfiles/rmilter/Dockerfile
index 2d0d0870..9a239139 100644
--- a/data/Dockerfiles/rmilter/Dockerfile
+++ b/data/Dockerfiles/rmilter/Dockerfile
@@ -1,18 +1,23 @@
-FROM debian:jessie
+FROM ubuntu:xenial
 MAINTAINER Andre Peters <andre.peters@servercow.de>
 
 ENV DEBIAN_FRONTEND noninteractive
+ENV LC_ALL C
 
-RUN apt-get update \
-	&& apt-get install -y wget \
-	&& wget -O- https://rspamd.com/apt-stable/gpg.key | apt-key add - \
-	&& echo "deb http://rspamd.com/apt-stable/ jessie main" > /etc/apt/sources.list.d/rspamd.list \
-	&& echo "deb-src http://rspamd.com/apt-stable/ jessie main" >> /etc/apt/sources.list.d/rspamd.list \
+RUN dpkg-divert --local --rename --add /sbin/initctl \
+    && ln -sf /bin/true /sbin/initctl \
+    && dpkg-divert --local --rename --add /usr/bin/ischroot \
+    && ln -sf /bin/true /usr/bin/ischroot
+
+RUN apt-key adv --fetch-keys http://rspamd.com/apt-stable/gpg.key \
+	&& echo "deb http://rspamd.com/apt-stable/ xenial main" > /etc/apt/sources.list.d/rspamd.list \
 	&& apt-get update \
 	&& apt-get --no-install-recommends -y --force-yes install rmilter
 
 CMD ["/usr/sbin/rmilter","-n", "-c", "/etc/rmilter.conf.d/rmilter.conf"]
 
+RUN apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+
 USER _rmilter
 
 EXPOSE 9000
diff --git a/data/Dockerfiles/rspamd/Dockerfile b/data/Dockerfiles/rspamd/Dockerfile
index ed43ef34..514f3104 100644
--- a/data/Dockerfiles/rspamd/Dockerfile
+++ b/data/Dockerfiles/rspamd/Dockerfile
@@ -1,15 +1,18 @@
-FROM debian:jessie
+FROM ubuntu:xenial
 MAINTAINER Andre Peters <andre.peters@debinux.de>
 
 ENV DEBIAN_FRONTEND noninteractive
+ENV LC_ALL C
 
-RUN apt-get update \
-	&& apt-get install -y wget \
-	&& wget -O- https://rspamd.com/apt-stable/gpg.key | apt-key add - \
-	&& echo "deb http://rspamd.com/apt-stable/ jessie main" > /etc/apt/sources.list.d/rspamd.list \
-	&& echo "deb-src http://rspamd.com/apt-stable/ jessie main" >> /etc/apt/sources.list.d/rspamd.list \
-	&& apt-get update \
-	&& apt-get --no-install-recommends -y --force-yes install rspamd
+RUN dpkg-divert --local --rename --add /sbin/initctl \
+    && ln -sf /bin/true /sbin/initctl \
+    && dpkg-divert --local --rename --add /usr/bin/ischroot \
+    && ln -sf /bin/true /usr/bin/ischroot
+
+RUN apt-key adv --fetch-keys http://rspamd.com/apt-stable/gpg.key \
+    && echo "deb http://rspamd.com/apt-stable/ xenial main" > /etc/apt/sources.list.d/rspamd.list \
+    && apt-get update \
+    && apt-get --no-install-recommends -y --force-yes install rspamd
 
 RUN echo '.include $LOCAL_CONFDIR/local.d/rspamd.conf.local' > /etc/rspamd/rspamd.conf.local
 # "Hardcoded" - we need them
@@ -17,6 +20,8 @@ RUN echo 'settings = "http://nginx:8081/settings.php";' > /etc/rspamd/modules.d/
 
 CMD ["/usr/bin/rspamd","-f", "-u", "_rspamd", "-g", "_rspamd"]
 
+RUN apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
+
 USER _rspamd
 
 EXPOSE 11333 11334
diff --git a/data/Dockerfiles/sogo/Dockerfile b/data/Dockerfiles/sogo/Dockerfile
index f9f55552..fdfc1b36 100644
--- a/data/Dockerfiles/sogo/Dockerfile
+++ b/data/Dockerfiles/sogo/Dockerfile
@@ -2,6 +2,12 @@ FROM ubuntu:xenial
 MAINTAINER Andre Peters <andre.peters@servercow.de>
 
 ENV DEBIAN_FRONTEND noninteractive
+ENV LC_ALL C
+
+RUN dpkg-divert --local --rename --add /sbin/initctl \
+    && ln -sf /bin/true /sbin/initctl \
+    && dpkg-divert --local --rename --add /usr/bin/ischroot \
+    && ln -sf /bin/true /usr/bin/ischroot
 
 ENV GOSU_VERSION 1.9
 RUN set -x \
@@ -30,3 +36,4 @@ EXPOSE 20000
 ENTRYPOINT ["/docker-entrypoint.sh"]
 CMD exec /usr/bin/supervisord -c /etc/supervisor/supervisord.conf
 
+RUN apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
diff --git a/data/Dockerfiles/sogo/docker-entrypoint.sh b/data/Dockerfiles/sogo/docker-entrypoint.sh
index e639c4f5..2aa2ef2b 100755
--- a/data/Dockerfiles/sogo/docker-entrypoint.sh
+++ b/data/Dockerfiles/sogo/docker-entrypoint.sh
@@ -1,6 +1,10 @@
 #!/bin/bash
 set -e
 
+until mysql -u ${DBUSER} -p${DBPASS} ${DBNAME} -e ""; do
+	sleep 1
+done
+
 mkdir -p /var/lib/sogo/GNUstep/Defaults/
 
 # Generate plist header with timezone data
diff --git a/data/conf/sogo/sieve.creds b/data/conf/sogo/sieve.creds
index 2ea0b29c..0c8f5fd2 100644
--- a/data/conf/sogo/sieve.creds
+++ b/data/conf/sogo/sieve.creds
@@ -1 +1 @@
-EEFos0swXBmY5rfy:7xKWGpXVC4w5vGNnJNa09o9X
+t5sqobb5szmj0of4:7gwo90wwbvpp5lfefwwfl1vu