%% You should probably cite draft-ietf-sieve-editheader instead of this I-D.
@techreport{degener-sieve-editheader-02,
    number =    {draft-degener-sieve-editheader-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-degener-sieve-editheader/02/},
    author =    {Jutta Degener},
    title =     {{Sieve -- 'editheader' extension}},
    pagetotal = 0,
    year =      2004,
    month =     dec,
    day =       2,
    abstract =  {This document defines three new actions for the 'sieve' language that add, delete, and change e-mail header fields.},
}