disable starttls

.gitignore

@@ -1,2 +1,4 @@
 *~
 .*~
+ENV
+ENV.test

Dockerfile

@@ -1,18 +1,20 @@
 FROM alpine:3.21.0
 
 LABEL Maintainer="Wolfgang Hottgenroth <woho@hottis.de>"
-LABEL ImageName=""
+LABEL ImageName="quay.io/wollud1969/exim-docker"
 
 # domain to be used in sender address of sent mails
 ENV LOCALMAILNAME=""
 # smarthost to send mail to
 ENV SMARTHOST=""
+ENV SMARTHOST_USER=""
+ENV SMARTHOST_PASS=""
 # ip addresses or networks to allow for relaying, separate multiple ones by semicolon
-ENV RELAYNETS=""
+ENV RELAYNETS="127.0.0.1/32"
 
-RUN apk add --no-cache exim bash
+RUN apk add --no-cache exim m4
 
-COPY exim.conf.tmpl /etc/exim
+COPY exim.conf.m4 /etc/exim
 COPY start.sh /etc/exim
 
 WORKDIR /etc/exim
@@ -20,6 +22,7 @@ WORKDIR /etc/exim
 EXPOSE 25
 
 CMD [ "./start.sh" ]
+#CMD [ "/usr/bin/m4 exim.conf.m4 > exim.conf && /usr/sbin/exim -bd -q15m -v" ]
 
  
 

examples/deploy.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+
+
+kubectl create secret generic smtp-secrets \
+  --dry-run=client \
+  -o yaml \
+  --save-config \
+  --from-literal=SMARTHOST="smtprelaypool.ispgateway.de" \
+  --from-literal=SMARTHOST_USER="pseudosmarthostuser@hottis.de" \
+  --from-literal=SMARTHOST_PASS="$SMARTHOST_PASSWORD" \
+  --from-literal=RELAY_NETWORKS=":10.0.0.0/8" | \
+kubectl apply -n system -f -
+
+kubectl apply -n system -f deploy.yml
+
+

examples/deploy.yml

@@ -0,0 +1,42 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: smtp
+  labels:
+    app: smtp
+  annotations:
+    secret.reloader.stakater.com/reload: smtp-secrets
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: smtp
+  template:
+    metadata:
+      labels:
+        app: smtp
+    spec:
+      containers:
+        - name: smtp
+          image: quay.io/wollud1969/exim-docker:0.2.0
+          envFrom:
+            - secretRef:
+                name: smtp-secrets
+          ports:
+            - containerPort: 25
+              protocol: TCP
+---
+apiVersion: v1
+kind: Service
+metadata:
+  name: smtp
+spec:
+  type: ClusterIP
+  selector:
+    app: smtp
+  ports:
+    - name: smtp
+      protocol: TCP
+      port: 25
+      targetPort: 25
+

examples/start-mailer.sh

@@ -18,7 +18,6 @@ docker run \
   -e SMARTHOST=smarthost.example.com \
   -e LOCALMAILNAME=example.com \
   -e RELAYNETS=$RELAYNETS \
-  -e ROOT=root@example.com \
   --network $MAILER_NETWORK \
   --name mailer \
   --restart always \

exim.conf.m4

@@ -0,0 +1,66 @@
+dnl values
+define(`HOSTNAME', esyscmd(`echo -n $HOSTNAME'))dnl
+define(`LOCALMAILNAME', esyscmd(`echo -n $LOCALMAILNAME'))dnl
+define(`SMARTHOST', esyscmd(`echo -n $SMARTHOST'))dnl
+define(`SMARTHOST_USER', esyscmd(`echo -n $SMARTHOST_USER'))dnl
+define(`SMARTHOST_PASS', esyscmd(`echo -n $SMARTHOST_PASS'))dnl
+define(`RELAYNETS', esyscmd(`echo -n $RELAYNETS'))dnl
+
+ifelse(SMARTHOST, `', `
+errprint(`Error: SMARTHOST not set')
+m4exit(1)
+')
+
+ifelse(HOSTNAME, `', `
+errprint(`Error: HOSTNAME not set')
+m4exit(1)
+')
+
+dnl template for exim.conf
+
+primary_hostname = HOSTNAME
+
+acl_smtp_rcpt = acl_check_rcpt
+
+tls_advertise_host =
+
+begin routers
+smarthost_route:
+  driver = manualroute
+  domains = *
+  transport = smarthost_smtp
+  route_list = * SMARTHOST
+
+begin transports
+smarthost_smtp:
+  driver = smtp
+  port = 25
+  multi_domain
+ifelse(SMARTHOST_USER, `', `', `dnl
+  hosts_require_auth = *
+')
+
+ifelse(SMARTHOST_USER, `', `', `
+begin authenticators
+plain:
+  driver = plaintext
+  public_name = PLAIN
+  client_send = ^SMARTHOST_USER^SMARTHOST_PASS
+
+login:
+  driver = plaintext
+  public_name = LOGIN
+  client_send = : SMARTHOST_USER : SMARTHOST_PASS
+')
+
+begin acl
+acl_check_rcpt:
+  accept
+    hosts = RELAYNETS
+  deny
+    message = "Relaying denied"
+
+ifelse(LOCALMAILNAME, `', `', `
+begin rewrite
+*@* ${1}@LOCALMAILNAME Ffrs
+')

exim.conf.tmpl

@@ -1,28 +0,0 @@
-primary_hostname = %HOSTNAME%
-qualify_domain = %LOCALMAILNAME%
-
-acl_smtp_rcpt = acl_check_rcpt
-
-begin routers
-smarthost_route:
-  driver = manualroute
-  domains = *
-  transport = smarthost_smtp
-  route_list = * %SMARTHOST%
-
-begin transports
-smarthost_smtp:
-  driver = smtp
-  port = 25
-  multi_domain
-
-begin acl
-acl_check_rcpt:
-  accept
-    hosts = %RELAYNETS%
-  deny
-    message = "Relaying denied"
-
-begin rewrite
-*@* ${1}@${qualify_domain} Ffrs
-

start.sh

@@ -1,13 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
-rm exim.conf
-
-cat exim.conf.tmpl \
-  | sed -e 's/%HOSTNAME%/'$HOSTNAME'/' \
-        -e 's#%RELAYNETS%#'$RELAYNETS'#' \
-        -e 's/%LOCALMAILNAME%/'$LOCALMAILNAME'/' \
-        -e 's/%SMARTHOST%/'$SMARTHOST'/' \
-  > exim.conf 
-
-exim -bd -q15m -v
+m4 exim.conf.m4 > exim.conf && exim -bd -q15m -v