Ok, all, a whole new plot twist in this tale of domains and separate email hosting, so I’m starting a new thread to more closely align with this new line of questioning.
A couple of days back I hit up the help desk at Posteo about if/how to have them handle third party domain email, and this is the bulk of their reply:
“We understand your desire to have an all-in-one solution for both your emails and domain. In Germany it’s unfortunately not entirely possible to offer this without saving data. There have always been explicit exceptions for providers that exclusively offer email services regarding storage obligations that other types of providers are subject to. For example, there is an exception for email services in TKG (German Telecommunications Act) but also with the retention of data. Because of this, we only offer services that can be realised without collecting and saving personally related inventory data or traffic data. This includes email addresses with Posteo domains as well as an address book and calendars. As a matter of principle, we do not save any personally related data or traffic data to accounts in order to protect our customers (from data theft among other things). However, it is usually required for you to provide personally related data when registering a domain. If you were able to use own domains with us, we would need to save inventory data to your account and create a respective interface for automated queries from the authorities. This goes against our concerns for privacy and security. Because of this, we can not support own domains and focus on private customers. Because of regulatory provisions, there are only conventional providers in Germany (that store data) for the usage of own domains. If a service explicitly advertises with “data economy” or “with as little data as possible”, it’s recommended to have a look at their privacy policy. The term is unfortunately often used incorrectly with misleading advertisements. Usually it means that data is collected and saved regardless - even if on servers located in Germany, for example. Nevertheless, we have a few tips for you: If you would like to use an own domain, you should make sure that security features like DNSSEC (and therefore also DANE) are taken care of. Usually the maintenance of various security relevant components like SPF, DKIM, DMARC or other delivery functions with own domains are usually left to the user. These can not/should not be exclusively guaranteed by the provider. Admittedly, maintaining these technologies is generally not possible for most users. For example, DANE is very important. This technology exists since 2014 and it effectively prevents man-in-the-middle attacks. Without DANE, attackers (like secret services/hackers) can easily intercept the transport route encryption of your connection and read your emails. DANE is also the basis for a directive of the BSI (German Federal Office of Security in Information Technology) for secure mail transportation, of which we were the first provider to be certified."
Ok… so… that’s a no. A totally justified one, and one I totally agree with their stance on. And a far more detailed one than I was expecting. But ultimately, a no, they can’t host my third party domain email.
SO… I’ve left Proton, I’m leaving Tuta, and Posteo seems great in the brief time I’ve used it but is evidently out as far as a privacy/security-focused email service to use as a base to channel a new domain’s emails through.
What other services can you suggest?
I tried Fastmail briefly, but then found out – on a site I can’t recall, but a highly text-based site one where the owner does deep dives into email service EULAs – that they seemingly make exceptions to their privacy policy and say they may share data with third parties? Does anyone have any takes on if that’s the case (since these days I’m reluctant to assume that any one person’s take is necessarily entirely correct).
Thanks!