{"draft":"draft-myers-smtp-auth-12","doc_id":"RFC2554","title":" SMTP Service Extension for Authentication ","authors":["J. Myers"],"format":["ASCII","HTML"],"page_count":"11","pub_status":"PROPOSED STANDARD","status":"PROPOSED STANDARD","source":"Legacy","abstract":" This document defines an SMTP service extension [ESMTP] 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.  [STANDARDS-TRACK]  ","pub_date":"February 1999","keywords":["simple","mail","transfer","protocol","security","layer","sasl"],"obsoletes":[],"obsoleted_by":["RFC4954"],"updates":[],"updated_by":[],"see_also":[],"doi":"10.17487\/RFC2554","errata_url":null}