Add the option to tune the "DKIM-Signature" header
According with RFC 8058 "Signaling One-Click Functionality for List Email Headers" (https://tools.ietf.org/html/rfc8058) in order to use the header "List-Unsubscribe" this must be included on "h" tag of DKIM sign, nowadays only "From:To:Subject;" are included on DKIM-Signature.
The idea is to allow the option to include additional information on the Plesk generated "DKIM-Signature" "h" tag.
Gonzalo Besoain
shared this idea
Thank you for your input! We will consider this functionality in upcoming releases if it will be popular.
Everyone, please continue voting for this feature if you consider it important.
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IG
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Gene H commented
I found this today having recently started getting rejections from a bunch of existing member accounts from Yahoo. I noticed my Plesk generated DKIM weirdly has :
h=Received:Received:Subject:To:From;
(why Received is in there at all is strange and more strange it is there twice!).
I've been advised by tools that check if it will be accepted by large email providers such as Yahoo that the List-Unsubscribe and List-Unsubscribe-Post should also be covered in the signature headers.
RFC 8058 unsubscription requires a DKIM signature covering List-Unsubscribe and List-Unsubscribe-Post
Does anyone know how to manually fix this temporarily until such time as perhaps it is included as an option in the Plesk panel ?
Thank you in advance,
GH