Create a Container Realm
From Roaring Penguin
- make container-thedomain-com
- map domain container.thedomain.com to this realm
- create user admin@container.thedomain.com in this realm (/home/dfs/bin/pwgen [length_in_chars])
- set parent realm of theirdomain-com to container-theirdomain-com
- set parent realm of all of their customers to the container realm instead. (if applicable)
- set sugarID of container-thedomain-com to whatever thedomain-com's was (same with expiry and such)