% 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/rfc2034.txt @misc{rfc2034, series = {Request for Comments}, number = 2034, howpublished = {RFC 2034}, publisher = {RFC Editor}, doi = {10.17487/RFC2034}, url = {https://www.rfc-editor.org/info/rfc2034}, author = {Ned Freed}, title = {{SMTP Service Extension for Returning Enhanced Error Codes}}, pagetotal = 6, year = 1996, month = oct, abstract = {This memo defines an extension to the SMTP service {[}RFC-821, RFC-1869{]} whereby an SMTP server augments its responses with the enhanced mail system status codes defined in RFC 1893. {[}STANDARDS-TRACK{]}}, }