[frank]as it says in the instructions on https://news.indieweb.org/how-to-submit-a-post but this gave the same error. The instructions are not clear enough for me to know which addresses should go where with a manual webmention.
Loqi[Frank Meeuwsen] Ik bedacht me zojuist dat er nóg een fijne bijkomstigheid is nu ik mijn OPEN nieuwsbrief op mijn eigen site publiceer en verstuur als nieuwsbrief. Ik gebruik webmentions op mijn site, een gratis plugin voor WordPress en open protocol wat weinig stuk...
petermolnar(rare case of bringing a topic over from -chat): GWG it depends, and ad usual, complicated. If the ownership is about the power of publication, than the content is secondary, so the main principle is indeed ownership of the means of publishing, hence domains. If the ownership is more about owning the content, the data, etc. than our principles are not organised accordingly.
Loqiown your data is an IndieWeb principle with two key parts: 1) your data lives primarily on your own domain, and 2) you maintain usable access to it over time https://indieweb.org/own_your_data
petermolnarYeah, that doesn't sound complete. "Owning" also means, especially in terms of owning the publication context, to redact or withdraw, 410 something, etc, which conflicts 2).