5 echo "Give arguments of mail domain and DKIM selector."
6 echo "Also, if hosting mail for entire domain, give third argument 'domainwide'."
13 # Set up DKIM key if necessary.
14 mkdir -p /etc/dkimkeys/
16 if [ ! -f "/etc/dkimkeys/${dkim_selector}.private" ]; then
19 dpkg -s opendkim-tools &> /dev/null
22 if [ ! "${preinstalled}" -eq "0" ]; then
23 apt install -y opendkim-tools
25 opendkim-genkey -s "${dkim_selector}"
26 mv "${dkim_selector}.private" /etc/dkimkeys/
27 if [ ! "${preinstalled}" -eq "0" ]; then
28 apt -y --purge autoremove opendkim-tools
32 # Link and adapt mail-server-specific /etc/ files.
33 ./hardlink_etc.sh mail
34 sed -i "s/REPLACE_Domain_ECALPER/${mail_domain}/g" /etc/opendkim.conf
35 sed -i "s/REPLACE_Selector_ECALPER/${dkim_selector}/g" /etc/opendkim.conf
36 sed -i "s/REPLACE_myhostname_ECALPER/$(hostname -f)/g" /etc/postfix/main.cf
37 if [ "${domainwide}" = "domainwide" ]; then
38 sed -i 's/REPLACE_mydomain_if_domainwide_ECALPER/$mydomain/g' /etc/postfix/main.cf
40 sed -i 's/REPLACE_mydomain_if_domainwide_ECALPER//g' /etc/postfix/main.cf
43 # Some useful debconf selections.
44 echo "postfix postfix/main_mailer_type string 'Internet Site'" | debconf-set-selections
45 echo "ssl_cert = </etc/letsencrypt/live/$(hostname -f)/fullchain.pem" > /etc/dovecot/conf.d/99-ssl-certs.conf
46 echo "ssl_key = </etc/letsencrypt/live/$(hostname -f)/privkey.pem" >> /etc/dovecot/conf.d/99-ssl-certs.conf
48 # The second line should not be necessary due to the first line, but for
49 # some reason the installation forgets to set up /etc/mailname early
50 # enough to not (when running newaliases) stumble over its absence.
51 echo "postfix postfix/mailname string ${mail_domain}" | debconf-set-selections
52 echo "${mail_domain}" > /etc/mailname
54 # Everything should now be ready for installations.
55 apt install -y -o Dpkg::Options::=--force-confold postfix dovecot-imapd opendkim
56 echo "TODO: Ensure MX entry for your system in your DNS configuration."
57 echo "TODO: Ensure a proper SPF entry for this system in your DNS configuration; something like 'v=spf1 mx -all' mapped to your host."
58 if [ "${add_dkim_record}" -eq "1" ]; then
59 echo "TODO: Add the following DKIM entry to your DNS configuration (possibly with slightly changed host entry – if your mail domain includes a subdomain, append that with a dot):"
60 cat "${dkim_selector}.txt"