Just a note on an undocumented problem and how I solved it:
Using the default url (or named host address) Virtualmin fails to install with this error:
SyntaxError: Non-ASCII character '\xe2' in file /var/lib/mailman/Mailman/mm_cfg.py on line 66
changed ec2 named internal ec2 host address to numerical on lines 66 & 69
DEFAULT_EMAIL_HOST = '10.248.x.x'
DEFAULT_URL_HOST = '10.248.x.x'
(using a numerical elastic ip this shouldn't be a problem).
It's also necessary to create an initial mail list
sudo newlist mailman
Be sure to use the FQDN for email address of list owner (email@example.com)
Post installation notes:
mysql cannot be accessed until you login (click provided link, login, then return to install)
"Primary nameserver cannot be resolved.." checkbox "SKIP" (address not yet resolvable)
NOTE: use arrow keys to navigate ascii text dialogs, the spacebar to make selection, and tab to OK.
Install succeeded on Ubuntu 12.04 LTS.