@misc{rfc8616,
    series =    {Request for Comments},
    number =    8616,
    howpublished =  {RFC 8616},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC8616},
    url =       {https://www.rfc-editor.org/info/rfc8616},
    author =    {John R. Levine},
    title =     {{Email Authentication for Internationalized Mail}},
    pagetotal = 6,
    year =      2019,
    month =     jun,
    abstract =  {Sender Policy Framework (SPF) (RFC 7208), DomainKeys Identified Mail (DKIM) (RFC 6376), and Domain-based Message Authentication, Reporting, and Conformance (DMARC) (RFC 7489) enable a domain owner to publish email authentication and policy information in the DNS. In internationalized email, domain names can occur both as U-labels and A-labels. This specification updates the SPF, DKIM, and DMARC specifications to clarify which form of internationalized domain names to use in those specifications.},
}