Only install Roundcube on Trusty for now, since there's no Jessie package.

Not awesome. We need a better alternative, ideally one with a better security stance.

README.md

 -   [IMAP](https://en.wikipedia.org/wiki/Internet_Message_Access_Protocol) over SSL via [Dovecot](http://dovecot.org/), complete with full text search provided by [Solr](https://lucene.apache.org/solr/).
 -   [POP3](https://en.wikipedia.org/wiki/Post_Office_Protocol) over SSL, also via Dovecot
 -   [SMTP](https://en.wikipedia.org/wiki/Simple_Mail_Transfer_Protocol) over SSL via Postfix, including a nice set of [DNSBLs](https://en.wikipedia.org/wiki/DNSBL) to discard spam before it ever hits your filters.
--   Webmail via [Roundcube](http://www.roundcube.net/).
+-   Webmail via [Roundcube](http://www.roundcube.net/). **NOTE:** currently [only available on Ubuntu Trusty](http://forums.debian.net/viewtopic.php?f=10&t=121928).
 -   Mobile push notifications via [Z-Push](http://z-push.sourceforge.net/soswp/index.php?pages_id=1&t=home).
 -   Email client [automatic configuration](https://developer.mozilla.org/en-US/docs/Mozilla/Thunderbird/Autoconfiguration).
 -   Jabber/[XMPP](http://xmpp.org/) instant messaging via [Prosody](http://prosody.im/).

roles/webmail/tasks/main.yml

 - include: roundcube.yml tags=roundcube
+  when: ansible_distribution_release == 'trusty'

roles/webmail/tasks/roundcube.yml

-- name: Add backports for Roundcube on Debian
-  lineinfile: dest=/etc/apt/sources.list line="deb http://http.debian.net/debian wheezy-backports main"
-  when: ansible_distribution_release == 'wheezy'
-  tags:
-    - dependencies
-
-- name: Update apt cache for backports
-  apt: update_cache=yes
-  tags:
-    - dependencies
-
-- name: Install Roundcube from wheezy-backports
-  apt: pkg={{ item }} state=latest default_release=wheezy-backports
-  with_items:
-  - roundcube
-  - roundcube-pgsql
-  - roundcube-plugins
-  when: ansible_distribution_release == 'wheezy'
-  tags:
-    - dependencies
-
-- name: Install Roundcube on Ubuntu 14.04 LTS
+- name: Install Roundcube
   apt: pkg={{ item }} state=latest
   with_items:
   - roundcube
   - roundcube-pgsql
   - roundcube-plugins
-  when: ansible_distribution_release == 'trusty'
   tags:
     - dependencies