diff --git a/build-version-via-dockerfile.sh b/build-version-via-dockerfile.sh
new file mode 100755
index 0000000..97b4e4b
--- /dev/null
+++ b/build-version-via-dockerfile.sh
@@ -0,0 +1,28 @@
+#!/bin/sh
+
+set -exu
+
+if [ $# -lt 1 ]; then
+    echo "$0 <container> [push]" >&2
+    exit 1
+fi
+container=$1; shift
+
+name=harbor.k8s.ungleich.ch/ungleich-public/${container}
+
+push=""
+if [ $# -ge 1 ]; then
+    push=yes
+fi
+
+cd $container
+for df in Dockerfile_*; do
+    version=$(echo $df | cut -d_ -f 2)
+    tag=${name}:${version}
+
+    docker build -t ${tag} -f ${df} .
+
+    if [ "$push" ]; then
+        docker push ${tag}
+    fi
+done
diff --git a/ungleich-mail/Dockerfile b/ungleich-mail/Dockerfile
deleted file mode 100644
index 45d4233..0000000
--- a/ungleich-mail/Dockerfile
+++ /dev/null
@@ -1,8 +0,0 @@
-FROM alpine:3.19
-
-RUN apk add --update \
-    postfix \
-    dovecot
-
-COPY entrypoint.sh /
-ENTRYPOINT /entrypoint.sh
diff --git a/ungleich-mail/Dockerfile_3.19 b/ungleich-mail/Dockerfile_3.19
new file mode 100644
index 0000000..b97d9c8
--- /dev/null
+++ b/ungleich-mail/Dockerfile_3.19
@@ -0,0 +1,10 @@
+FROM alpine:3.19
+
+RUN apk add --update \
+    postfix \
+    dovecot
+
+# COPY entrypoint.sh /
+# ENTRYPOINT /entrypoint.sh
+
+RUN postconf maillog_file=/dev/stdout
diff --git a/ungleich-mail/Dockerfile_3.20 b/ungleich-mail/Dockerfile_3.20
new file mode 100644
index 0000000..76db122
--- /dev/null
+++ b/ungleich-mail/Dockerfile_3.20
@@ -0,0 +1,7 @@
+FROM alpine:3.20
+
+RUN apk add --update \
+    postfix \
+    dovecot
+
+RUN postconf maillog_file=/dev/stdout
diff --git a/ungleich-mail/README.org b/ungleich-mail/README.org
index 9d1cfad..c3249f9 100644
--- a/ungleich-mail/README.org
+++ b/ungleich-mail/README.org
@@ -1,6 +1,14 @@
-* Stuff to do
+* Usage (as of 2024)
+** Intro
+   - Postfix can be started using "/usr/sbin/postfix start-fg"
+   - Logging is already configured for stdout
+** Next todos
+*** Add simple authentication support
+    - so we can be used as a smarthost
+* Stuff to do (before 2024)
 ** PROGRESS Add smtp support (postfix?)
 ** PROGRESS Add imap support
+   - maybe later?
 ** PROGRESS Define where/how to save mails
    - /data would be fitting
 ** PROGRESS Add db support (?) or not?
@@ -8,7 +16,8 @@
    - restarts are usually fine
    - requires dovecot in same containerx
 ** TODO Define deployment requirements (such as SPF/DKIM etc)
-** TODO add stdout logging
+** DONE add stdout logging
+CLOSED: [2024-10-05 Sat 14:37]
 
  Logging to stdout is useful when Postfix runs in a container, as it eliminates a syslogd dependency.
 
diff --git a/ungleich-mail/archived_entrypoint.sh b/ungleich-mail/archived_entrypoint.sh
new file mode 100644
index 0000000..155fe38
--- /dev/null
+++ b/ungleich-mail/archived_entrypoint.sh
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+# Just for reference - we inject commands directly via kubernetes
+/usr/sbin/postfix start-fg
diff --git a/ungleich-mail/entrypoint.sh b/ungleich-mail/entrypoint.sh
deleted file mode 100644
index d105c83..0000000
--- a/ungleich-mail/entrypoint.sh
+++ /dev/null
@@ -1,4 +0,0 @@
-#!/bin/sh
-
-/usr/sbin/postfix start
-/usr/sbin/dovecot