%% You should probably cite rfc4406 instead of this I-D.
@techreport{lyon-senderid-core-01,
    number =    {draft-lyon-senderid-core-01},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-lyon-senderid-core/01/},
    author =    {Meng Weng Wong and Jim Lyon},
    title =     {{Sender ID: Authenticating E-Mail}},
    pagetotal = 19,
    year =      2005,
    month =     may,
    day =       19,
    abstract =  {Internet mail suffers from the fact that much unwanted mail is sent using spoofed addresses -- "spoofed" in this case means that the address is used without the permission of the domain owner. This document describes a family of tests by which SMTP servers can determine whether an e-mail address in a received message was used with the permission of the owner of the domain contained in that e-mail address. This memo defines an Experimental Protocol for the Internet community.},
}