@misc{rfc4954,
    series =    {Request for Comments},
    number =    4954,
    howpublished =  {RFC 4954},
    publisher = {RFC Editor},
    doi =       {10.17487/RFC4954},
    url =       {https://www.rfc-editor.org/info/rfc4954},
    author =    {Rob Siemborski and Alexey Melnikov},
    title =     {{SMTP Service Extension for Authentication}},
    pagetotal = 20,
    year =      2007,
    month =     jul,
    abstract =  {This document defines a Simple Mail Transport Protocol (SMTP) extension whereby an SMTP client may indicate an authentication mechanism to the server, perform an authentication protocol exchange, and optionally negotiate a security layer for subsequent protocol interactions during this session. This extension includes a profile of the Simple Authentication and Security Layer (SASL) for SMTP. This document obsoletes RFC 2554. {[}STANDARDS-TRACK{]}},
}