%% You should probably cite rfc5235 instead of this I-D.
@techreport{ietf-sieve-spamtestbis-05,
    number =    {draft-ietf-sieve-spamtestbis-05},
    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-sieve-spamtestbis/05/},
    author =    {Cyrus Daboo},
    title =     {{Sieve Email Filtering: Spamtest and Virustest Extensions}},
    pagetotal = 13,
    year =      2006,
    month =     jul,
    day =       13,
    abstract =  {The Sieve email filtering language "spamtest", "spamtestplus", and "virustest" extensions permit users to use simple, portable commands for spam and virus tests on email messages. Each extension provides a new test using matches against numeric "scores". It is the responsibility of the underlying Sieve implementation to do the actual checks that result in proper input to the tests. {[}STANDARDS-TRACK{]}},
}