# NAME leenooks/smtp
# VERSION latest

FROM alpine

# Change to http respositories, so they we can cache the install packages
RUN if [ -n ${HTTP_PROXY} ] ; then sed -i -e s'/https/http/' /etc/apk/repositories; fi

RUN apk add --no-cache postfix postfix-ldap cyrus-sasl cyrus-sasl-login opendkim opendkim-utils

# SASL config
COPY smtpd.conf /etc/sasl2/

RUN apk add shadow && useradd -rc "HUB Mail Relay" -M relay -NG mail -s /sbin/nologin && echo relay:SmTpR3l2Y | chpasswd \
  && gpasswd -a postfix opendkim

# Config postfix
RUN sed -i -e 's%^#mynetworks = hash:/etc/postfix/network_table%mynetworks = /etc/opendkim/signing/TrustedHosts%' /etc/postfix/main.cf
COPY include /etc/postfix/include
COPY ssl /etc/postfix/ssl
RUN chmod 644 /etc/postfix/ssl/ca.crts /etc/postfix/include/*cf

# Enable DKIM
RUN mkdir /run/opendkim
COPY opendkim.conf /etc/opendkim/
COPY signing /etc/opendkim/signing/
COPY defaults /defaults/

COPY init /sbin/

VOLUME [ "/var/spool/postfix","/etc/postfix/custom","/var/mail/vhosts" ]
EXPOSE 25

# Starting
ENTRYPOINT [ "/sbin/init" ]


# Control
#* add require EHLO - DONE
#* mydestination
#* ldap hostname via init in where clauses
#* virtual_alias_domain ? (Dont list in mydestination) OR (for unix accounts - DONT NEED?)
#* virtual_mailbox_domain (Dont list in mydestination)
#
#
#     1 /etc/postfix/main.cf:
#     2     virtual_mailbox_domains = example.com ...more domains...
#     3     virtual_mailbox_base = /var/mail/vhosts
#     4     virtual_mailbox_maps = hash:/etc/postfix/vmailbox
#     5     virtual_minimum_uid = 100
#     6     virtual_uid_maps = static:5000
#     7     virtual_gid_maps = static:5000
#     8     virtual_alias_maps = hash:/etc/postfix/virtual
#     9 
#    10 /etc/postfix/vmailbox:
#    11     info@example.com    example.com/info
#    12     sales@example.com   example.com/sales/
#    13     # Comment out the entry below to implement a catch-all.
#    14     # @example.com      example.com/catchall
#    15     ...virtual mailboxes for more domains...
#    16 
#    17 /etc/postfix/virtual:
#    18     postmaster@example.com postmaster
#
#TEST Environement:
#* dege.lan - virtual
#* dege.au - virtual
#* dlcm.co - virtual
#* bbs.dege.au - sync
#* dcml.au - axigen