CAA-Records with ISPConfig

If you want to use CAA-Records, you can use my backport: https://blog.schaal-24.de/ispconfig/caa-records-mit-ispconfig/?lang=en
RFC6844 has some options that are currently not used by the CAs so you can not see this in the interface (until you change the templates).

Read more about CAA:
https://sslmate.com/labs/caa/
https://www.dawnbringer.net/blog/1029/More certificate control with CAA-records in your DNS
https://tools.ietf.org/html/rfc6844