On Tue, 24 May 2016 12:21:24 -0000 Gabriel Margiani <gabriel@margiani.ch> wrote:
From this I'd think there's a problem with header or body being slightly modified somewhere on the way (added line breaks or something. I think, we've relaxed/relaxed set, so let's see if it passes)
IIRC mailman modifies the identation of the headers (tabs vs spaces). I'm not sure if this is a bug or not, but I didn't see a reason to force simple for the headers when looked into this and I believe gmail also uses relaxed/simple. I'm not sure if relaxed/relaxed is a good idea. I read somewhere that */relaxed would obviously allow ascii art to be altered. This might not be a problem for some, but so far I didn't need it so I kept simple. Another issue with the mailing list is that we prepend the list name to the subject. This generally means that even with relaxed/simple DKIM will fail when you send the first message of a thread. I might start a discussion about this at some point and switch all our lists to a more DKIM compliant behaviour, but for now it doesn't matter too much since mailman is set to replace the sender when the domain uses a reject DMARC policy. Florian