infra/playbooks/roles/mail/templates/user-patches.sh.j2

#!/bin/bash

postconf -e 'smtpd_sasl_type = dovecot'
postconf -e 'smtpd_sasl_path = /dev/shm/sasl-auth.sock'
postconf -e 'smtpd_sasl_auth_enable = yes'
postconf -e 'broken_sasl_auth_clients = yes'

# This is necessary for any users with multiple email addresses. Kanidm stores all email addresses in
# the mail attribute, which means that postfix clones emails to all addresses. Since dovecot only
# has a mailbox for the primary email address, the other addresses will bounce, and the sender
# will receive a bounce message. Kanidm provides the "primary" (first) email address in the
# emailprimary attribute, so we use that instead.
#
# We don't change the ldap-sender.cf or ldap-groups.cf files because we want people to be able to
# send mail from any of their email addresses, not just the primary one, and we want email to
# groups to be delivered regardless of which email it arrives at.
sed -i 's/result_attribute = mail/result_attribute = emailprimary/' /etc/postfix/ldap-aliases.cf
sed -i 's/result_attribute = mail/result_attribute = emailprimary/' /etc/postfix/ldap-domains.cf
sed -i 's/result_attribute = mail/result_attribute = emailprimary/' /etc/postfix/ldap-users.cf

echo 'auth_username_format = %Ln' >>/etc/dovecot/conf.d/10-auth.conf

echo 'username_format = %Ln' >>/etc/dovecot/dovecot-oauth2.conf.ext

echo "passdb {
    driver = ldap
    args = /etc/dovecot/dovecot-ldap.conf.ext
}

userdb {
    driver = static
    args = uid=5000 gid=5000 home=/var/mail/%u
}" >/etc/dovecot/conf.d/auth-ldap.conf.ext