Brauners mail server

It's not generated by his server, it's generated by neomutt. Last year, neomutt completely broke Message-IDs for kernel development (turning them into completely random strings[1] that make lore.kernel.org links even less legible than they already are). I think he has his muttrc somewhere, but here's mine that does something almost identical (except the random words are English)[2,3].

[1]: https://github.com/neomutt/neomutt/pull/3655
[2]: https://github.com/cyphar/dotfiles/blob/main/.mutt/muttrc...
[3]: https://github.com/cyphar/dotfiles/commit/cc751369dd0b6ac...