%% You should probably cite rfc2852 instead of this I-D.
@techreport{newman-deliver-02,
    number =    {draft-newman-deliver-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-newman-deliver/02/},
    author =    {Dr. Daniel Newman},
    title =     {{Deliver By SMTP Service Extension}},
    pagetotal = 13,
    year =      1999,
    month =     jan,
    day =       6,
    abstract =  {This memo defines a mechanism whereby a SMTP client can request, when transmitting a message to a SMTP server, that the server deliver the message within a prescribed period of time. {[}STANDARDS-TRACK{]}},
}