For Korumail Pro edition which has advanced protection features like containment…etc, there is no any ISO file that can be downloaded. Initial setup is done by Comodo Support after purchasing a Pro license then any updates for this edition are seen on the top of the dashboard as a notification and you can get the newer update automatically by clicking on it.
I think you may want to ask for Korumail Premium edition. You can find the necessary information and base setup ISO file for this edition under Korumail web site page below:
After installing from this file, you need to take a Korumail Premium Activation Key also by clicking the “Get Your Free License” button on this page. Then you should enter this License Key on CAM Activation Key part on your console to use the product.
I hope these clarifications would be helpful for you. If not, please let us know to help you.
Two independent instance that should be managed seperately but you can backup and restore all your configurations with maillogs. But the version of backuped one should be same as the version of restored one.
For your license issue, if you had got a Free license before, you can not get another one again. But the license you got before should be worked. If you can send an email to our support address: email@example.com, our support guys can investigate it in detail with you. or I see that you were in contact with our support for your another request today, you can tell this issue on that conversation also whichever is comfortable for you if your problem still exists.
Being able to run two servers that host a DB each and then sync between each other would be good as this allows proper failover and multiple MX’s instead of having one dedicated MX with a independent backup system sat there with a backup ready.