%% You should probably cite rfc8580 instead of this I-D.
@techreport{ietf-extra-sieve-fcc-02,
    number =    {draft-ietf-extra-sieve-fcc-02},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-ietf-extra-sieve-fcc/02/},
    author =    {Kenneth Murchison and Bron Gondwana},
    title =     {{Sieve Extension: File Carbon Copy (Fcc)}},
    pagetotal = 10,
    year =      ** No value found for 'doc.pub_date.year' **,
    month =     ** No value found for 'doc.pub_date' **,
    day =       ** No value found for 'doc.pub_date.day' **,
    abstract =  {The Sieve Email Filtering Language provides a number of action commands, some of which can generate additional messages on behalf of the user. This document defines an extension to such commands to allow a copy of any generated message to be filed into a target mailbox.},
}