Re: DKIM fail messages

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On 10/30/22 6:13 PM, Jaron Kent-Dobias wrote:
On Sunday, 30 October 2022 at 17:58 (-0400), David Rosenstrauch wrote:
Anyone know why these fail messages might be happening?

FWIW, my OpenDKIM with default settings flagged your earlier email with a DKIM fail, but passed this one. The failure mechanism on the first email was "signature verification failed". I'm no DKIM expert, but perhaps there was a DNS resolution problem at that time and the key was inaccessible?


Hmmm .... that's really weird that the 1st msg failed but the 2nd passed.

And this part in particular makes no sense to me:

Relevant part of received headers follows:

 From your earlier email:
Authentication-Results: mail.kent-dobias.com;
       dkim=fail reason="signature verification failed" (2048-bit key;
       unprotected) header.d=darose.net header.i=@darose.net
       header.a=rsa-sha256 header.s=dreamhost header.b=UaDsk2dh
Authentication-Results: mail.kent-dobias.com; dmarc=fail (p=none dis=none)
       header.from=darose.net
Authentication-Results: mail.kent-dobias.com; spf=pass
       smtp.mailfrom=lists.archlinux.org
Authentication-Results: lists.archlinux.org;
       dkim=pass header.d=darose.net header.s=dreamhost
       header.b=UaDsk2dh;
       dmarc=pass (policy=none) header.from=darose.net;
       spf=pass (lists.archlinux.org: domain of darose@xxxxxxxxxx
       designates 23.83.214.25 as permitted sender)
       smtp.mailfrom=darose@xxxxxxxxxx;
       arc=pass ("mailchannels.net:s=arc-2022:i=1")

So on the 1st msg, Arch's mailman was able to verify my DKIM record, but your OpenDKIM was not. And presumably these were only a few minutes apart from each other. (Possibly even seconds apart.)


I guess it's working now, so all's well that ends well? But still really weird.

Thanks,

DR




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