%% You should probably cite rfc4496 instead of this I-D.
@techreport{ietf-opes-smtp-use-cases-06,
    number =    {draft-ietf-opes-smtp-use-cases-06},
    type =      {Internet-Draft},
    institution =   {Internet Engineering Task Force},
    publisher = {Internet Engineering Task Force},
    note =      {Work in Progress},
    url =       {https://datatracker.ietf.org/doc/draft-ietf-opes-smtp-use-cases/06/},
    author =    {Martin Stecher and Abbie Barbir},
    title =     {{Open Pluggable Edge Services (OPES) SMTP Use Cases}},
    pagetotal = 12,
    year =      2006,
    month =     jan,
    day =       10,
    abstract =  {The Open Pluggable Edge Services (OPES) framework is application agnostic. Application-specific adaptations extend that framework. This document describes OPES SMTP use cases and deployment scenarios in preparation for SMTP adaptation with OPES. This memo provides information for the Internet community.},
}