{"draft":"","doc_id":"RFC1047","title":" Duplicate messages and SMTP ","authors":["C. Partridge"],"format":["ASCII","HTML"],"page_count":"3","pub_status":"UNKNOWN","status":"UNKNOWN","source":"Legacy","abstract":" An examination of a synchronization problem in the Simple Mail Transfer Protocol (SMTP) is presented.  This synchronization problem can cause a message to be delivered multiple times.  A method for avoiding this problem is suggested.  Nodding familiarity with the SMTP specification, RFC-821, is required.  ","pub_date":"February 1988","keywords":["  "],"obsoletes":[],"obsoleted_by":[],"updates":[],"updated_by":[],"see_also":[],"doi":"10.17487\/RFC1047","errata_url":null}