Hi drebs, all, Just a short note on this: On 19-07-17 14:50:50, drebs wrote: > When I send a message to a schleuder list, it is first encrypted to > the list's OpenPGP certificate before leaving my computer. Schleuder > will then decrypt it and re-encrypt to the subscribers' certificates, > and it will maintain the Message-Id untouched. FWIW: That's configurable, see [1]. Unfortunately, that's currently the only place which documents this kind of stuff. Cheers, Georg [1] https://0xacab.org/schleuder/schleuder/blob/191b5122403942496490e532e48a290d7dd0cd98/etc/list-defaults.yml#L49