set -e
# Ensure we have a mail address as argument.
-if [ $# -lt 1 ]; then
- echo "Need mail address as argument."
+if [ $# -lt 2 ]; then
+ echo "Need target domain and mail address as argument."
false
fi
-mail_address="$1"
+domain="$1"
+mail_address="$2"
# If port 80 blocked by iptables, open it.
set +e
fi
# Create new certificate and copy it to /etc/letsencrypt.
-certbot certonly --standalone --agree-tos -m "${mail}" -d "$(hostname -f)"
+certbot certonly --standalone --agree-tos -m "${mail_address}" -d "${domain}"
# Remove iptables rule to open port 80 if we added it.
if [ "${open_iptables}" -eq "1" ]; then
smtpd_relay_restrictions = permit_mynetworks permit_sasl_authenticated defer_unauth_destination
myorigin = /etc/mailname
-myhostname = $myorigin
+myhostname = REPLACE_myhostname_ECALPER
alias_maps = hash:/etc/aliases
alias_database = hash:/etc/aliases
-mydestination = $myhostname, localhost.plomlompom.com, localhost
+mydestination = $myhostname localhost.$mydomain localhost REPLACE_mydomain_if_domainwide_ECALPER
relayhost =
mynetworks = 127.0.0.0/8 [::ffff:127.0.0.0]/104 [::1]/128
mailbox_size_limit = 0
#/bin/sh
set -e
-dkim_selector=$1
-if [ ! -n "${dkim_selector}" ]; then
- echo "Give DKIM selector argument."
+if [ $# -lt 2 ]; then
+ echo "Give arguments of mail domain and DKIM selector."
+ echo "Also, if hosting mail for entire domain, give third argument 'domainwide'."
false
fi
+mail_domain="$1"
+dkim_selector="$2"
+domainwide="$3"
# Set up DKIM key if necessary.
mkdir -p /etc/dkimkeys/
# Link and adapt mail-server-specific /etc/ files.
./hardlink_etc.sh mail
-sed -i "s/REPLACE_Domain_ECALPER/$(hostname -f)/g" /etc/opendkim.conf
+sed -i "s/REPLACE_Domain_ECALPER/${mail_domain}/g" /etc/opendkim.conf
sed -i "s/REPLACE_Selector_ECALPER/${dkim_selector}/g" /etc/opendkim.conf
+sed -i "s/REPLACE_myhostname_ECALPER/$(hostname -f)/g" /etc/postfix/main.cf
+if [ "${domainwide}" = "domainwide" ]; then
+ sed -i 's/REPLACE_mydomain_if_domainwide_ECALPER/$mydomain/g' /etc/postfix/main.cf
+else
+ sed -i 's/REPLACE_mydomain_if_domainwide_ECALPER//g' /etc/postfix/main.cf
+fi
# Some useful debconf selections.
echo "postfix postfix/main_mailer_type string 'Internet Site'" | debconf-set-selections
# The second line should not be necessary due to the first line, but for
# some reason the installation forgets to set up /etc/mailname early
# enough to not (when running newaliases) stumble over its absence.
-echo "postfix postfix/mailname string $(hostname -f)" | debconf-set-selections
-echo "$(hostname -f)" > /etc/mailname
+echo "postfix postfix/mailname string ${mail_domain}" | debconf-set-selections
+echo "${mail_domain}" > /etc/mailname
# Everything should now be ready for installations.
apt install -y -o Dpkg::Options::=--force-confold postfix dovecot-imapd opendkim
echo "TODO: Ensure MX entry for your system in your DNS configuration."
-echo "TODO: Ensure a proper SPF entry for this system in your DNS configuration; something like 'v=spf1 a mx -all' mapped to your host."
+echo "TODO: Ensure a proper SPF entry for this system in your DNS configuration; something like 'v=spf1 mx -all' mapped to your host."
if [ "${add_dkim_record}" -eq "1" ]; then
echo "TODO: Add the following DKIM entry to your DNS configuration (possibly with slightly changed host entry – if your mail domain includes a subdomain, append that with a dot):"
cat "${dkim_selector}.txt"