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Re:Helm: Personal Email Server by newman314 on Wednesday October 17, 2018 @04:51PM (#18243702)
According to this page (https://thehelm.com/pages/technology), the following is logged.

* Name, address, payment information, domain, DNS records

* Device diagnostics (such as temperature), software versions, enabled services, connection status, connection type, serial number

* Anything related to customer support, including information customers provide

So plenty of information to uniquely identify a system. The last bullet is a little concerning as it seems to be a catch-all.

Re:Helm: Personal Email Server by gsreenivas on Thursday October 18, 2018 @05:51PM (#18252474)
The last bullet isn't intended to be a catch-all but to reflect the fact that we can't control what customers provide us via customer support.
Re:Helm: Personal Email Server by ryan-c on Wednesday October 17, 2018 @06:11PM (#18244289)
I don't see what the issue with uniquely identifying a system is. The main metadata of concern is what other mail servers are being interacted with.
Re:Helm: Personal Email Server by johntash on Wednesday October 17, 2018 @07:29PM (#18244723)
If everything has to go through their relay, they can pretty easily see what mail servers are being interacted with.
Re:Helm: Personal Email Server by newman314 on Wednesday October 17, 2018 @07:35PM (#18244751)
Thanks.

Please see my other questions here. https://news.ycombinator.com/item?id=18243685

Re:Helm: Personal Email Server by ryan-c on Wednesday October 17, 2018 @08:05PM (#18244919)
Yes, but they don't have to log that, and given the way the system is described there's no reason it would by default.