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====I know that Ubuntu 14.04 LTS is not officially supported yet, but I thought I'd give it a try and see what happened.

I'm running a fresh Ubuntu 14.04 LTS (Trusty Tahr) (PVHVM) cloud instance on RackSpace and just installed iRedMail-0.8.6 with default install script settings and MySQL backend.

Cluebringer
cluebringer did not have a login screen. It went right to the control panel and was configureable. Yikes! (https://example.com/cluebringer/)

I uninstalled it because I didn't need it. (I'm waffling here. I might reinstall it.)
apt-get autoremove postfix-cluebringer
Awstats is having the same problem. I'm assuming something is not enabled properly in apache.

Awstats
awstats.pl file (i.e. https://example.com/awstats/awstats.pl) was being downloaded instead of being processed/executed.
An apache mod was not enabled.
a2enmod cgi

Awstats displays without having to enter a user / password also. It appears that mod_auth_basic and dbd is loaded and the related config files are enabled. Not sure why its not asking for a user/pass. I'm assuming something is not enabled properly. Any help would be appreciated with this.

Iredadmin
https://iredadmin/ returned and Internal Server Error.
apache logs were misleading.
"mod_wsgi (pid=12069): Target WSGI script '/usr/share/apache2/iredadmin/iredadmin.py' cannot be loaded as Python module.", and other mod_wsgi errors.

It ended up that I had to create a sybolic link in the /etc/apache2 conf area.
ln -s /etc/apache2/conf-available/iredadmin.conf /etc/apache2/conf-enabled/iredadmin.conf
or just do
a2enconf iredadmin
It is now working properly.

Roundcube
worked as expected.

PHP admin
I did not select to have PHP admin installed during initial install.

Conclusion
I've been using iredmail for a few years and love it! Still do! Thanks team and community!