Probably just an extension to existing ETSI legal interception interfaces[1] that I believe are required to be implemented by all service providers of a certain size in the EU. Your personal email server and private IRC network are probably out of scope.
[1] e.g. for email: https://www.etsi.org/deliver/etsi_ts/102200_102299/10223202/... - the specs are really boring to read and there are lots and lots of them, if you want to deep dive. From what I can tell it's basically just the service provider implementing an API client that feeds everything they're required to a centralized endpoint.
[1] e.g. for email: https://www.etsi.org/deliver/etsi_ts/102200_102299/10223202/... - the specs are really boring to read and there are lots and lots of them, if you want to deep dive. From what I can tell it's basically just the service provider implementing an API client that feeds everything they're required to a centralized endpoint.