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docker-mailserver
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docker-mailserver/start-mailserver.sh

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#!/bin/bash
die () {
echo >&2 "$@"
exit 1
}
if [ -f /tmp/postfix/accounts.cf ]; then
echo "Regenerating postfix 'vmailbox' and 'virtual' for given users"
echo "# WARNING: this file is auto-generated. Modify accounts.cf in postfix directory on host" > /etc/postfix/vmailbox
# Checking that /tmp/postfix/accounts.cf ends with a newline
sed -i -e '$a\' /tmp/postfix/accounts.cf
# Creating users
while IFS=$'|' read login pass
do
# Setting variables for better readability
user=$(echo ${login} | cut -d @ -f1)
domain=$(echo ${login} | cut -d @ -f2)
# Let's go!
echo "user '${user}' for domain '${domain}' with password '********'"
echo "${login} ${domain}/${user}/" >> /etc/postfix/vmailbox
/usr/sbin/userdb ${login} set uid=5000 gid=5000 home=/var/mail/${domain}/${user} mail=/var/mail/${domain}/${user}
echo "${pass}" | userdbpw -md5 | userdb ${login} set systempw
echo "${pass}" | saslpasswd2 -p -c -u ${domain} ${login}
mkdir -p /var/mail/${domain}
if [ ! -d "/var/mail/${domain}/${user}" ]; then
maildirmake "/var/mail/${domain}/${user}"
fi
echo ${domain} >> /tmp/vhost.tmp
done < /tmp/postfix/accounts.cf
makeuserdb
else
echo "==> Warning: '/tmp/postfix/accounts.cf' is not provided. No mail account created."
fi
if [ -f /tmp/postfix/virtual ]; then
# Copying virtual file
cp /tmp/postfix/virtual /etc/postfix/virtual
while IFS=$' ' read from to
do
# Setting variables for better readability
domain=$(echo ${from} | cut -d @ -f2)
echo ${domain} >> /tmp/vhost.tmp
done < /tmp/postfix/virtual
else
echo "==> Warning: '/tmp/postfix/virtual' is not provided. No mail alias created."
fi
if [ -f /tmp/vhost.tmp ]; then
cat /tmp/vhost.tmp | sort | uniq > /etc/postfix/vhost && rm /tmp/vhost.tmp
fi
echo "Postfix configurations"
touch /etc/postfix/vmailbox && postmap /etc/postfix/vmailbox
touch /etc/postfix/virtual && postmap /etc/postfix/virtual
# DKIM
grep -vE '^(\s*$|#)' /etc/postfix/vhost | while read domainname; do
mkdir -p /etc/opendkim/keys/$domainname
if [ ! -f "/etc/opendkim/keys/$domainname/mail.private" ]; then
echo "Creating DKIM private key /etc/opendkim/keys/$domainname/mail.private"
pushd /etc/opendkim/keys/$domainname
opendkim-genkey --subdomains --domain=$domainname --selector=mail
popd
echo ""
echo "DKIM PUBLIC KEY ################################################################"
cat /etc/opendkim/keys/$domainname/mail.txt
echo "################################################################################"
fi
# Write to KeyTable if necessary
keytableentry="mail._domainkey.$domainname $domainname:mail:/etc/opendkim/keys/$domainname/mail.private"
if [ ! -f "/etc/opendkim/KeyTable" ]; then
echo "Creating DKIM KeyTable"
echo "mail._domainkey.$domainname $domainname:mail:/etc/opendkim/keys/$domainname/mail.private" > /etc/opendkim/KeyTable
else
if ! grep -q "$keytableentry" "/etc/opendkim/KeyTable" ; then
echo $keytableentry >> /etc/opendkim/KeyTable
fi
fi
# Write to SigningTable if necessary
signingtableentry="*@$domainname mail._domainkey.$domainname"
if [ ! -f "/etc/opendkim/SigningTable" ]; then
echo "Creating DKIM SigningTable"
echo "*@$domainname mail._domainkey.$domainname" > /etc/opendkim/SigningTable
else
if ! grep -q "$signingtableentry" "/etc/opendkim/SigningTable" ; then
echo $signingtableentry >> /etc/opendkim/SigningTable
fi
fi
done
echo "Changing permissions on /etc/opendkim"
# chown entire directory
chown -R opendkim:opendkim /etc/opendkim/
# And make sure permissions are right
chmod -R 0700 /etc/opendkim/keys/
# DMARC
# if ther is no AuthservID create it
if [ `cat /etc/opendmarc.conf | grep AuthservID | wc -l` -gt 0 ]; then
echo "AuthservID $hostname" >> /etc/opendmarc.conf
fi
if [ `cat /etc/opendmarc.conf | grep TrustedAuthservIDs | wc -l` -gt 0 ]; then
echo "TrustedAuthservIDs $hostname" >> /etc/opendmarc.conf
fi
if [ ! -f "/etc/opendmarc/ignore.hosts" ]; then
mkdir -p /etc/opendmarc/
echo "localhost" >> /etc/opendmarc/ignore.hosts
fi
# SSL Configuration
case $DMS_SSL in
"letsencrypt" )
# letsencrypt folders and files mounted in /etc/letsencrypt
# Postfix configuration
sed -i -r 's/smtpd_tls_cert_file=\/etc\/ssl\/certs\/ssl-cert-snakeoil.pem/smtpd_tls_cert_file=\/etc\/letsencrypt\/live\/'$(hostname)'\/fullchain.pem/g' /etc/postfix/main.cf
sed -i -r 's/smtpd_tls_key_file=\/etc\/ssl\/private\/ssl-cert-snakeoil.key/smtpd_tls_key_file=\/etc\/letsencrypt\/live\/'$(hostname)'\/privkey.pem/g' /etc/postfix/main.cf
# Courier configuration
cat "/etc/letsencrypt/live/$(hostname)/privkey.pem" "/etc/letsencrypt/live/$(hostname)/cert.pem" > "/etc/letsencrypt/live/$(hostname)/combined.pem"
sed -i -r 's/TLS_CERTFILE=\/etc\/courier\/imapd.pem/TLS_CERTFILE=\/etc\/letsencrypt\/live\/'$(hostname)'\/combined.pem/g' /etc/courier/imapd-ssl
# POP3 courier configuration
sed -i -r 's/POP3_TLS_REQUIRED=0/POP3_TLS_REQUIRED=1/g' /etc/courier/pop3d-ssl
sed -i -r 's/TLS_CERTFILE=\/etc\/courier\/pop3d.pem/TLS_CERTFILE=\/etc\/letsencrypt\/live\/'$(hostname)'-combined.pem/g' /etc/courier/pop3d-ssl
# needed to support gmail
sed -i -r 's/TLS_TRUSTCERTS=\/etc\/ssl\/certs/TLS_TRUSTCERTS=\/etc\/letsencrypt\/live\/'$(hostname)'-fullchain.pem/g' /etc/courier/pop3d-ssl
echo "SSL configured with letsencrypt certificates"
;;
"self-signed" )
# Adding self-signed SSL certificate if provided in 'postfix/ssl' folder
if [ -e "/tmp/postfix/ssl/$(hostname)-cert.pem" ] \
&& [ -e "/tmp/postfix/ssl/$(hostname)-key.pem" ] \
&& [ -e "/tmp/postfix/ssl/$(hostname)-combined.pem" ] \
&& [ -e "/tmp/postfix/ssl/demoCA/cacert.pem" ]; then
echo "Adding $(hostname) SSL certificate"
mkdir -p /etc/postfix/ssl
cp "/tmp/postfix/ssl/$(hostname)-cert.pem" /etc/postfix/ssl
cp "/tmp/postfix/ssl/$(hostname)-key.pem" /etc/postfix/ssl
cp "/tmp/postfix/ssl/$(hostname)-combined.pem" /etc/postfix/ssl
cp /tmp/postfix/ssl/demoCA/cacert.pem /etc/postfix/ssl
# Postfix configuration
sed -i -r 's/smtpd_tls_cert_file=\/etc\/ssl\/certs\/ssl-cert-snakeoil.pem/smtpd_tls_cert_file=\/etc\/postfix\/ssl\/'$(hostname)'-cert.pem/g' /etc/postfix/main.cf
sed -i -r 's/smtpd_tls_key_file=\/etc\/ssl\/private\/ssl-cert-snakeoil.key/smtpd_tls_key_file=\/etc\/postfix\/ssl\/'$(hostname)'-key.pem/g' /etc/postfix/main.cf
sed -i -r 's/#smtpd_tls_CAfile=/smtpd_tls_CAfile=\/etc\/postfix\/ssl\/cacert.pem/g' /etc/postfix/main.cf
sed -i -r 's/#smtp_tls_CAfile=/smtp_tls_CAfile=\/etc\/postfix\/ssl\/cacert.pem/g' /etc/postfix/main.cf
ln -s /etc/postfix/ssl/cacert.pem "/etc/ssl/certs/cacert-$(hostname).pem"
# Courier configuration
sed -i -r 's/TLS_CERTFILE=\/etc\/courier\/imapd.pem/TLS_CERTFILE=\/etc\/postfix\/ssl\/'$(hostname)'-combined.pem/g' /etc/courier/imapd-ssl
# POP3 courier configuration
sed -i -r 's/POP3_TLS_REQUIRED=0/POP3_TLS_REQUIRED=1/g' /etc/courier/pop3d-ssl
sed -i -r 's/TLS_CERTFILE=\/etc\/courier\/pop3d.pem/TLS_CERTFILE=\/etc\/postfix\/ssl\/'$(hostname)'-combined.pem/g' /etc/courier/pop3d-ssl
echo "SSL configured with self-signed/custom certificates"
fi
;;
esac
echo "Fixing permissions"
chown -R 5000:5000 /var/mail
mkdir -p /var/log/clamav && chown -R clamav:root /var/log/clamav
chown postfix.sasl /etc/sasldb2
echo "Creating /etc/mailname"
echo $(hostname -d) > /etc/mailname
echo "Configuring Spamassassin"
echo "required_hits 5.0" >> /etc/mail/spamassassin/local.cf
echo "report_safe 0" >> /etc/mail/spamassassin/local.cf
echo "required_score 5" >> /etc/mail/spamassassin/local.cf
echo "rewrite_header Subject ***SPAM***" >> /etc/mail/spamassassin/local.cf
cp /tmp/spamassassin/rules.cf /etc/spamassassin/
echo "Starting daemons"
cron
/etc/init.d/rsyslog start
/etc/init.d/saslauthd start
/etc/init.d/courier-authdaemon start
/etc/init.d/courier-imap start
/etc/init.d/courier-imap-ssl start
if [ "$ENABLE_POP3" = 1 ]; then
echo "Starting POP3 services"
/etc/init.d/courier-pop start
/etc/init.d/courier-pop-ssl start
fi
/etc/init.d/spamassassin start
/etc/init.d/clamav-daemon start
/etc/init.d/amavis start
/etc/init.d/opendkim start
/etc/init.d/opendmarc start
/etc/init.d/postfix start
echo "Listing SASL users"
sasldblistusers2
echo "Starting..."
tail -f /var/log/mail.log
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