dmarc-auth definition attempt

gistfile1.txt

5.3.  General Record Format


auth:  (comma-separated plain-text list of dmarc-methods; OPTIONAL; default is "spf,dkim")
    Indicates the supported authentication methods.  The order of the list is not significant and 
    unknown methods are ignored.  Possible values are as follows:
        dkim: Authenticate with DKIM
        spf: Authenticate with SPF

    An empty list is a syntax error. 

    If any listed method passes and is aligned, then DMARC passes. 


5.4.  Formal Definition


    dmarc-method = "dkim" / "spf"

    dmarc-auth = "auth" equals dmarc-method *(*WSP "," *WSP dmarc-method)