fixed

Dockerfile

@@ -1,33 +1,28 @@
-FROM debian:bookworm
+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=""
-# recipient addresses for root aliases, separate multiple addresses by space
-ENV ROOT=""
+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 \
-  apt update && \
-  apt upgrade -y --autoremove && \
-  apt install -y exim4-daemon-light ca-certificates curl && \ 
-  rm -rf /var/lib/apt/lists/*
+RUN apk add --no-cache exim m4
 
-COPY update-exim4.conf.tmpl /etc/exim4/
-COPY aliases.tmpl /etc/exim4/
-COPY adjust-config.sh /etc/exim4/
-COPY start.sh /etc/exim4/
+COPY exim.conf.m4 /etc/exim
+COPY start.sh /etc/exim
 
-WORKDIR /etc/exim4
+WORKDIR /etc/exim
 
 EXPOSE 25
 
 CMD [ "./start.sh" ]
+#CMD [ "/usr/bin/m4 exim.conf.m4 > exim.conf && /usr/sbin/exim -bd -q15m -v" ]
 
  
 

ENV

@@ -0,0 +1,9 @@
+export HOSTNAME=`hostname`
+export LOCALMAILNAME="hottis.de"
+#export LOCALMAILNAME=""
+export SMARTHOST=smtprelaypool.ispgateway.de
+#export SMARTHOST=""
+export SMARTHOST_USER=pseudosmarthostuser@hottis.de 
+#export SMARTHOST_USER="_"
+export SMARTHOST_PASS="Chaediek3Chaer7u" 
+export RELAYNETS="0.0.0.0/0"

adjust-config.sh

@@ -1,15 +0,0 @@
-#!/bin/bash
-
-cat update-exim4.conf.tmpl \
-  | sed -e 's/%HOSTNAME%/'$HOSTNAME'/' \
-        -e 's#%RELAYNETS%#'$RELAYNETS'#' \
-        -e 's/%LOCALMAILNAME%/'$LOCALMAILNAME'/' \
-        -e 's/%SMARTHOST%/'$SMARTHOST'/' \
-  > update-exim4.conf.conf 
-cat aliases.tmpl \
-  | sed -e 's/%ROOT%/'"$ROOT"'/' \
-  > ../aliases && \
-newaliases
-
-/usr/sbin/update-exim4.conf -v
-

aliases.tmpl

@@ -1,14 +0,0 @@
-mailer-daemon: postmaster
-postmaster: root
-nobody: root
-hostmaster: root
-usenet: root
-news: root
-webmaster: root
-www: root
-ftp: root
-abuse: root
-noc: root
-security: root
-root: %ROOT%
-

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 +1,64 @@
+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
+
+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
+')

start.sh

@@ -1,5 +1,4 @@
-#!/bin/bash
+#!/bin/sh
 
-./adjust-config.sh
-exim -bd -q15m 
+m4 exim.conf.m4 > exim.conf && exim -bd -q15m -v
 

update-exim4.conf.tmpl

@@ -1,14 +0,0 @@
-dc_eximconfig_configtype='satellite'
-dc_other_hostnames='%HOSTNAME%'
-dc_local_interfaces='0.0.0.0'
-dc_readhost='%LOCALMAILNAME%'
-dc_relay_domains=''
-dc_minimaldns='false'
-dc_relay_nets='%RELAYNETS%'
-dc_smarthost='%SMARTHOST%'
-CFILEMODE='644'
-dc_use_split_config='false'
-dc_hide_mailname='true'
-dc_mailname_in_oh='true'
-dc_localdelivery='mail_spool'
-