%% You should probably cite draft-ietf-sieve-convert instead of this I-D.
@techreport{melnikov-sieve-convert-00,
    number =    {draft-melnikov-sieve-convert-00},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-melnikov-sieve-convert/00/},
    author =    {Alexey Melnikov and Qian Sun},
    title =     {{Sieve Extension for converting messages before delivery}},
    pagetotal = 6,
    year =      2008,
    month =     jul,
    day =       5,
    abstract =  {This document describes how Lemonade CONVERT can be used to transform messages before final delivery.},
}