Merge branch 'master' into fix-sender-checks

core/postfix/Dockerfile

@@ -2,11 +2,13 @@ FROM alpine:3.8
 
 RUN apk add --no-cache postfix postfix-pcre rsyslog \
     python3 py3-pip \
- && pip3 install jinja2 podop
+ && pip3 install --upgrade pip \
+ && pip3 install jinja2 podop tenacity
 
 COPY conf /conf
 COPY start.py /start.py
 
 EXPOSE 25/tcp 10025/tcp
+VOLUME ["/data"]
 
 CMD /start.py

core/postfix/conf/main.cf

@@ -2,8 +2,6 @@
 # General
 ###############
 
-debug_peer_list = 0.0.0.0/0
-
 # Main domain and hostname
 mydomain = {{ DOMAIN }}
 myhostname = {{ HOSTNAMES.split(",")[0] }}

core/postfix/conf/master.cf

@@ -8,6 +8,7 @@ smtp      inet  n       -       n       -       -       smtpd
 10025     inet  n       -       n       -       -       smtpd
   -o smtpd_sasl_auth_enable=yes
   -o smtpd_client_restrictions=reject_unlisted_sender,reject_authenticated_sender_login_mismatch,permit
+  -o smtpd_reject_unlisted_recipient={% if REJECT_UNLISTED_RECIPIENT %}{{ REJECT_UNLISTED_RECIPIENT }}{% else %}no{% endif %}
   -o cleanup_service_name=outclean
 outclean  unix n       -       n       -       0       cleanup
   -o header_checks=pcre:/etc/postfix/outclean_header_filter.cf

core/postfix/start.py

@@ -5,8 +5,10 @@ import os
 import socket
 import glob
 import shutil
+import tenacity
 import multiprocessing
 
+from tenacity import retry
 from podop import run_server
 
 
@@ -23,8 +25,12 @@ def start_podop():
 
 convert = lambda src, dst: open(dst, "w").write(jinja2.Template(open(src).read()).render(**os.environ))
 
+@retry(stop=tenacity.stop_after_attempt(100), wait=tenacity.wait_random(min=2, max=5))
+def resolve():
+	os.environ["FRONT_ADDRESS"] = socket.gethostbyname(os.environ.get("FRONT_ADDRESS", "front"))
+
 # Actual startup script
-os.environ["FRONT_ADDRESS"] = socket.gethostbyname(os.environ.get("FRONT_ADDRESS", "front"))
+resolve()
 os.environ["HOST_ANTISPAM"] = os.environ.get("HOST_ANTISPAM", "antispam:11332")
 os.environ["HOST_LMTP"] = os.environ.get("HOST_LMTP", "imap:2525")