On Thu, Sep 07, 2023 at 10:31:53AM +1000, raf via Mutt-users wrote: > Hi, This has come up recently in the Postfix mailing list. MTAs can > convert 8bit messages when sending to another MTA that doesn't > advertise that it can accept 8bit. If the DKIM signing happens > before the conversion, then subsequent DKIM checks will fail. Work > is being done in Postfix to address this. I don't know about other > MTAs. It seems unlikely that there are any MTAs that can't accept > 8bit messages, but perhaps there are some that are misconfigured and > don't advertise the fact to other MTAs.
My own MTA is configured (not *mis*configured) like that, because I prefer SMTP as it was originally specified :) But I don't block incoming messages based on DKIM failure. -- Ian
