new alpine base

Dockerfile

@@ -1,20 +1,18 @@
-FROM alpine:3.21.0
+FROM alpine:3.21.3
 
 LABEL Maintainer="Wolfgang Hottgenroth <woho@hottis.de>"
-LABEL ImageName="quay.io/wollud1969/exim-docker"
+LABEL ImageName=""
 
 # 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="127.0.0.1/32"
+ENV RELAYNETS=""
 
-RUN apk add --no-cache exim m4
+RUN apk add --no-cache exim bash
 
-COPY exim.conf.m4 /etc/exim
+COPY exim.conf.tmpl /etc/exim
 COPY start.sh /etc/exim
 
 WORKDIR /etc/exim
@@ -22,7 +20,6 @@ WORKDIR /etc/exim
 EXPOSE 25
 
 CMD [ "./start.sh" ]
-#CMD [ "/usr/bin/m4 exim.conf.m4 > exim.conf && /usr/sbin/exim -bd -q15m -v" ]
 
  
 

ENV

@@ -1,9 +0,0 @@
-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"

examples/start-mailer.sh

@@ -18,6 +18,7 @@ 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

@@ -1,64 +0,0 @@
-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
-')

exim.conf.tmpl

@@ -0,0 +1,28 @@
+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

@@ -1,4 +1,13 @@
-#!/bin/sh
+#!/bin/bash
 
-m4 exim.conf.m4 > exim.conf && exim -bd -q15m -v
+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