Am 13.04.21 um 17:29 schrieb Stuart Henderson via mailop:
On 2021/04/13 11:11, Wolfgang Rosenauer via mailop wrote:Hi,I'm seeing issues with GMail not recognizing a valid DKIM signature. Message is correctly signed like: DKIM-Signature: v=1; a=ed25519-sha256; GMail reports dkim=neutral (no key) while most DKIM validators (incl. dmarcian) are totally fine with the provided key. The only reason I could imagine is the key/hash format but I haven't seen any official documentation from GMail if ed25519-sha256 is supported or not. Any ideas or recommendations?I don't know specifically about gmail, but generally support for ed25519 in DKIM is still a bit lacking, I think the advice for this is still to dual-sign.
I can confirm that switchting to RSA makes GMail happy again. I'm really surprised they are behind on such a thing :-(
Wolfgang
OpenPGP_signature
Description: OpenPGP digital signature
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