Hi Ralph, thank you for your answer, too.
Am Mi., 13. März 2019 um 02:36 Uhr schrieb Ralph Seichter <[email protected]>: > a valid DKIM signature. I thought that disabling the 8BITMIME extension > in Postfix was a possible solution, but that did not make a difference. That is what I tried, too. With the same outcome as the problem resided. > After fruitless experiments, I found that Thunderbird was (at least > partly) to blame. Only after setting "mail.strictly_mime=true" via TB's > config editor did I no longer experience DKIM signature breakage. That is a good point, but we all have to deal with buggy MUAs like TB or Outlook. I hate that too, but changing the default MUA config is not what I intend to do, as postfix is able to convert the body part so that it fits the RFCs. I like that postfix can do such things and would love to stay with those functions as postfix is rock solid with the most standard settings. > My point is that it is not trivial to figure out where your problem > originates. If you find a solution, I would be very interested hearing Fortunately it's the sequence of doing things as it seems to me. Let's see if this order can be changed, that would do the trick. Maybe Wietse or someone else is able to clarify and help. Would be fantastic. ;-) Michael
