local sending and forwarding server

Dockerfile

@@ -1,6 +1,3 @@
-# TODO: This configuration is only really useful for sending e-mail.  It
-# receives and stores email for local users but we're not serving them
-# just yet.
 FROM sutty/monit:latest
 MAINTAINER "f <f@sutty.nl>"
 
@@ -68,7 +65,11 @@ RUN postconf -e alias_maps='hash:/etc/postfix/aliases' \
   && postconf -e masquerade_domains='$mydomain' \
   && postconf -e non_smtpd_milters=inet:opendkim:8891 \
   && postconf -e smtpd_milters=inet:opendkim:8891 \
-  && postconf -e virtual_alias_maps=hash:/etc/postfix/maps/virtual
+  && postconf -e virtual_alias_maps=hash:/etc/postfix/maps/virtual \
+  && postconf -e sender_canonical_maps=tcp:postsrsd:10001 \
+  && postconf -e sender_canonical_classes=envelope_sender \
+  && postconf -e recipient_canonical_maps=tcp:postsrsd:10002 \
+  && postconf -e recipient_canonical_classes=envelope_recipient,header_recipient
 
 RUN newaliases
 RUN postmap /etc/postfix/transport
@@ -78,13 +79,7 @@ COPY ./monit.conf /etc/monit.d/postfix.conf
 COPY ./postfix.sh /usr/local/bin/postfix
 RUN chmod 755 /usr/local/bin/postfix
 
-# Check config
-RUN monit -t
-
-# Save email for later!
-VOLUME "/var/spool/postfix"
 VOLUME "/etc/postfix/maps"
-VOLUME "/home"
 
 # Port
 EXPOSE 25

postfix.sh

@@ -7,17 +7,4 @@ postconf -e smtpd_tls_key_file="/etc/letsencrypt/live/${SUTTY}/privkey.pem"
 postconf -e smtpd_tls_cert_file="/etc/letsencrypt/live/${SUTTY}/fullchain.pem"
 postconf -e mynetworks="127.0.0.0/8 [::1]/128 `ip route | grep -v default | cut -d " " -f 1`"
 
-# Recreate users from ~
-for home in /home/*; do
-  user="${home##*/}"
-  test "${user}" = "*" && continue
-
-  uid="$(stat -c %u "${home}")"
-
-  # Skip if it already exists
-  getent passwd ${user} >/dev/null && continue
-
-  adduser -h ${home} -s /bin/false -G users -D -H -u ${uid} ${user}
-done
-
 exec /usr/sbin/postfix start