% Datatracker information for RFCs on the Legacy Stream is unfortunately often % incorrect. Please correct the bibtex below based on the information in the % actual RFC at https://rfc-editor.org/rfc/rfc2554.txt @misc{rfc2554, series = {Request for Comments}, number = 2554, howpublished = {RFC 2554}, publisher = {RFC Editor}, doi = {10.17487/RFC2554}, url = {https://www.rfc-editor.org/info/rfc2554}, author = {John G. Myers}, title = {{SMTP Service Extension for Authentication}}, pagetotal = 11, year = 1999, month = mar, 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{]}}, }