{"draft":"","doc_id":"RFC2034","title":" SMTP Service Extension for Returning Enhanced Error Codes ","authors":["N. Freed"],"format":["ASCII","HTML"],"page_count":"6","pub_status":"PROPOSED STANDARD","status":"PROPOSED STANDARD","source":"Legacy","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]  ","pub_date":"September 1996","keywords":["[SMTP-ENH|p]","Simple","Mail","Transfer","Protocol"],"obsoletes":[],"obsoleted_by":[],"updates":[],"updated_by":[],"see_also":[],"doi":"10.17487\/RFC2034","errata_url":null}