Replace IPSec tunnels by app-level ephemeral TLS sessions.

For some reason giraff doesn't like IPSec.  App-level TLS sessions are
less efficient, but thanks to ansible it still scales well.

2 files changed, 32 insertions, 2 deletions

diff --git a/roles/IMAP/tasks/imap.yml b/roles/IMAP/tasks/imap.yml
index 5424485..3e93c53 100644
--- a/roles/IMAP/tasks/imap.yml
+++ b/roles/IMAP/tasks/imap.yml
@@ -45,51 +45,59 @@
 
 - name: Create virtual mailboxes
   copy: src=etc/dovecot/virtual/{{ item }}/dovecot-virtual
         dest=/etc/dovecot/virtual/{{ item }}/dovecot-virtual
         owner=root group=root
         mode=0644
   with_items:
     - all
     - flagged
     - recent
     - unseen
 
 - name: Create directory /home/mail/spamspool
   # There is no possibility for a name clash, since 'spamspool' isn't a
   # valid domain
   file: path=/home/mail/spamspool
         state=directory
         owner=vmail group=vmail
         mode=0700
 
+- name: Create directory /etc/dovecot/ssl
+  file: path=/etc/dovecot/ssl
+        state=directory
+        owner=root group=root
+        mode=0755
+
 - name: Generate a private key and a X.509 certificate for Dovecot
   command: genkeypair.sh x509
                          --pubkey=/etc/dovecot/ssl/imap.fripost.org.pem
                          --privkey=/etc/dovecot/ssl/imap.fripost.org.key
                          --dns=imap.fripost.org
                          -t rsa -b 4096 -h sha512
   register: r1
   changed_when: r1.rc == 0
   failed_when: r1.rc > 1
   notify:
     - Restart Dovecot
+  tags:
+    - genkey
 
 - name: Configure Dovecot
   copy: src=etc/dovecot/{{ item }}
         dest=/etc/dovecot/{{ item }}
         owner=root group=root
         mode=0644
   register: r2
   with_items:
     - conf.d/10-auth.conf
     - conf.d/10-logging.conf
     - conf.d/10-mail.conf
     - conf.d/10-master.conf
     - conf.d/10-ssl.conf
     - conf.d/15-mailboxes.conf
     - conf.d/20-imap.conf
     - conf.d/20-lmtp.conf
     - conf.d/90-plugin.conf
     - conf.d/90-sieve.conf
     - conf.d/auth-ldap.conf.ext
     - dovecot-ldap.conf.ext
diff --git a/roles/IMAP/tasks/mda.yml b/roles/IMAP/tasks/mda.yml
index 0358f12..4a74ed3 100644
--- a/roles/IMAP/tasks/mda.yml
+++ b/roles/IMAP/tasks/mda.yml
@@ -1,42 +1,64 @@
 - name: Install Postfix
   apt: pkg={{ item }}
   with_items:
     - postfix
     - postfix-ldap
 
 - name: Configure Postfix
   template: src=etc/postfix/main.cf.j2
             dest=/etc/postfix-{{ postfix_instance[inst].name }}/main.cf
             owner=root group=root
             mode=0644
-  register: r
+  register: r1
   notify:
     - Restart Postfix
 
 - name: Create directory /etc/postfix-.../virtual
   file: path=/etc/postfix-{{ postfix_instance[inst].name }}/virtual
         state=directory
         owner=root group=root
         mode=0755
 
 - name: Copy lookup tables
   copy: src=etc/postfix/virtual/{{ item }}
         dest=/etc/postfix-{{ postfix_instance[inst].name }}/virtual/{{ item }}
         owner=root group=root
         mode=0644
   with_items:
     - mailbox_domains.cf
     - mailbox.cf
     - transport_content_filter.cf
 
 - name: Copy recipient canonical
   copy: src=etc/postfix/recipient_canonical.pcre
         dest=/etc/postfix-{{ postfix_instance[inst].name }}/recipient_canonical.pcre
         owner=root group=root
         mode=0644
 
+- name: Build the Postfix relay clientcerts map
+  sudo: False
+  # smtpd_tls_fingerprint_digest MUST be sha256!
+  local_action: shell openssl x509 -in certs/postfix/{{ item }}.pem -noout -fingerprint -sha256 | sed -nr 's/^.*=(.*)/\1 {{ item }}/p'
+  with_items: groups.MX | difference([inventory_hostname]) | sort
+  register: relay_clientcerts
+  changed_when: False
+
+- name: Copy the Postfix relay clientcerts map
+  template: src=etc/postfix/relay_clientcerts.j2
+            dest=/etc/postfix-{{ postfix_instance[inst].name }}/relay_clientcerts
+            owner=root group=root
+            mode=0644
+
+- name: Compile the Postfix relay clientcerts map
+  postmap: cmd=postmap src=/etc/postfix-{{ postfix_instance[inst].name }}/relay_clientcerts db=cdb
+           owner=root group=root
+           mode=0644
+  register: r2
+  notify:
+    - Restart Postfix
+
 - name: Start Postfix
   service: name=postfix state=started
-  when: not r.changed
+  when: not (r1.changed or r2.changed)
 
 - meta: flush_handlers