@techreport{levine-trace-header-registry-01,
    number =    {draft-levine-trace-header-registry-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-levine-trace-header-registry/01/},
    author =    {S Moonesamy and John R. Levine},
    title =     {{Mail Header Trace Fields}},
    pagetotal = 6,
    year =      2012,
    month =     jan,
    day =       22,
    abstract =  {SMTP mail software adds trace fields to messages as they pass through the mail system. This memo provides background information about trace fields in mail standards. It discusses the use of trace fields in mail-related specifications. It updates the definition of trace header fields, and adds trace field information to the relevant registries.},
}