One method's result in an Authentication-Results: header, such as
dkim=pass header.d=example.com.
Fields:
:method: the method name, lowercase, such as"dkim","spf"or"dmarc". Unknown methods are kept:version: the method version, when written (dkim/1=pass):result::pass,:fail,:softfail,:neutral,:none,:temperror,:permerror,:policyor:hardfail, or the text as written when it is none of these:reason: thereason=text:properties: the other properties, such as%{"header.d" => "example.com"}, with lowercase names