The monkey house uses roundcube which is a html email client ours is a bit ancient in open source terms so copy the postgresql schema and test install a later version.
I migrate the old directories to an new version, point it at the copied schema and run
cd <the-unpacked-roundcube-directory> bin/installto.sh <your-existing-roundcube-directory>
That works and has the old info and a different set of config values.
It is better, but many of the frames did not show like identities.
Header always set X-Frame-Options SAMEORIGIN #roundcube no DENY
Dkimstatus a plugin needs fixing and works with a never release. the tls:// seting overrides any port specific setting. If like us zoo inhabitants you host your imap on rfc 1912 range then no tls and a port setting works.
These seem redundant moving from .9.x to version 1.1.1 if you have tls://
$rcmail_config['smtp_port'] = 587; $rcmail_config['smtp_user'] = '%u'; $rcmail_config['smtp_pass'] = '%p';
X-Frame is the bitch. but it is interesting to see where this is going and its worth the time.
The rest of installs (remember there are four zoo’s) went without a hitch although dkimstatus needed swapping out each time for being a bit ancient.