%% You should probably cite draft-extra-imap-unauth instead of this I-D.
@techreport{newman-imap-unauth-02,
    number =    {draft-newman-imap-unauth-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-imap-unauth/02/},
    author =    {Chris Newman},
    title =     {{IMAP UNAUTHENTICATE for Connection Reuse}},
    pagetotal = 11,
    year =      2018,
    month =     mar,
    day =       22,
    abstract =  {This specification extends the Internet Message Access Protocol (IMAP) to allow an administrative client to reuse the same IMAP connection on behalf of multiple IMAP user identities.},
}