fix base image tag

.woodpecker.yml

@@ -12,13 +12,8 @@ steps:
         from_secret: container_registry_password
       dockerfile: Dockerfile
     when:
-      - event: [push, tag]
+      - event: tag
-  scan_image:
+
-    image: aquasec/trivy
-    commands:
-      - trivy image $FORGE_NAME/$CI_REPO:$CI_COMMIT_SHA --quiet --exit-code 1
-    when:
-      - event: [push, tag]
   build:
     image: plugins/kaniko
     settings:
@@ -33,4 +28,4 @@ steps:
         from_secret: quay_password
       dockerfile: Dockerfile
     when:
-      - event: [tag]
+      - event: tag

Dockerfile

@@ -1,4 +1,4 @@
-FROM alpine:3.21.0
+FROM alpine:3.23.2
 
 LABEL Maintainer="Wolfgang Hottgenroth <woho@hottis.de>"
 LABEL ImageName="quay.io/wollud1969/exim-docker"
@@ -11,6 +11,9 @@ 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"
+# whitelist of recipient domains, colon-separated, if empty all no restrictions
+ENV WHITELISTED_RECIPIENTS=""
+
 
 RUN apk add --no-cache exim m4
 
@@ -22,7 +25,6 @@ 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.yml

@@ -2,6 +2,7 @@ apiVersion: apps/v1
 kind: Deployment
 metadata:
   name: smtp
+  namespace: system
   labels:
     app: smtp
   annotations:
@@ -18,7 +19,7 @@ spec:
     spec:
       containers:
         - name: smtp
-          image: quay.io/wollud1969/exim-docker:0.2.1
+          image: quay.io/wollud1969/exim-docker:0.3.4
           envFrom:
             - secretRef:
                 name: smtp-secrets
@@ -30,6 +31,7 @@ apiVersion: v1
 kind: Service
 metadata:
   name: smtp
+  namespace: system
 spec:
   type: ClusterIP
   selector:

exim.conf.m4

@@ -5,6 +5,8 @@ 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
+define(`WHITELISTED_RECIPIENTS', esyscmd(`echo -n $WHITELISTED_RECIPIENTS'))dnl
+
 
 ifelse(SMARTHOST, `', `
 errprint(`Error: SMARTHOST not set')
@@ -59,8 +61,11 @@ begin acl
 acl_check_rcpt:
   accept
     hosts = RELAYNETS
+ifelse(WHITELISTED_RECIPIENTS, `', `', `
+    domains = WHITELISTED_RECIPIENTS
+')
   deny
-    message = "Relaying denied"
+    message = "550 5.7.1 Relaying denied"
 
 ifelse(LOCALMAILNAME, `', `', `
 begin rewrite

readme.md

@@ -12,6 +12,7 @@ Four environment variables are used to configure the container:
 * `SMARTHOST_PASS`: Password for smarthost.
 * `LOCALMAILNAME`: The domain name which shall be used as the domain part of the sender address in every outgoing mail. If not required, skip it.
 * `RELAYNETS`: Networks exim in this container accepts for relaying. Separate multiple networks by semicolon.
+* `WHITELISTED_RECIPIENT`: Colon-separated list of whitelisted recipient domains, if empty no recipient restrictions will be applied
 
 
 ## Deployment
@@ -24,7 +25,7 @@ Typically, don't expose the smtp port of this container to the default network o
 ```
 #!/bin/bash
 
-IMAGE=quay.io/wollud1969/exim-docker:0.2.2
+IMAGE=quay.io/wollud1969/exim-docker:0.3.2
 MAILER_NETWORK=mailer-network
 
 docker network create $MAILER_NETWORK || echo "mailer-network already exists"
@@ -38,6 +39,7 @@ docker run \
   -e SMARTHOST=smarthost.example.com \
   -e LOCALMAILNAME=krohne.com \
   -e RELAYNETS=$RELAYNETS \
+  -e WHITELISTED_RECIPIENT="example-recipients.com" \
   --network $MAILER_NETWORK \
   --name mailer \
   --restart always \

tools/smtp-dialog.exp

@@ -0,0 +1,68 @@
+#!/usr/bin/expect
+
+package require base64
+
+
+# SMTP-Server und Port definieren
+set smtp_server "172.16.3.33"
+set smtp_port "25"
+set timeout 25
+
+# Absender, Empfänger und Nachricht
+set sender $env(SMTP_SENDER)
+set recipient $env(SMTP_RECIPIENT)
+set message "Subject: Test Email\r\n\r\nThis is a test email sent via an expect script."
+
+set smtp_user $env(SMTP_USER)
+set smtp_pass $env(SMTP_PASS) 
+
+set smtp_user_64 [base64::encode $smtp_user]
+set smtp_pass_64 [base64::encode $smtp_pass]
+
+
+# Verbindung herstellen
+spawn nc -C $smtp_server $smtp_port
+
+# Begrüßung vom Server erwarten
+expect "220 *"
+
+# HELO/EHLO senden
+send "EHLO baikonur\n"
+expect "250 *"
+
+if {[info exists smtp_user] && $smtp_user ne ""} {
+  send "AUTH LOGIN\n"
+  expect "334 VXNlcm5hbWU6"
+
+  send "$smtp_user_64\n"
+  expect "334 UGFzc3dvcmQ6"
+
+  send "$smtp_pass_64\n"
+  expect "235 2.7.0 Authentication successful"
+} else {
+  puts "skip authentication"
+}
+
+# Absender definieren
+send "MAIL FROM:<$sender>\n"
+expect "250 *"
+
+# Empfänger definieren
+send "RCPT TO:<$recipient>\n"
+expect "250 *"
+
+# Datenübertragung starten
+send "DATA\n"
+expect "354 *"
+
+# Nachricht senden und Übertragung abschließen
+send "$message\n.\n"
+expect "250 *"
+
+# Verbindung schließen
+send "QUIT\n"
+expect "221 *"
+
+# Beenden
+interact
+