RFC 5965, "An Extensible Format for Email Feedback Reports", August 2010Source of RFC: marf (app)
Errata ID: 3120
Status: Held for Document Update
Publication Format(s) : TEXT
Reported By: John Levine
Date Reported: 2012-02-14
Held for Document Update by: Pete Resnick
Section 2.d. says:
This part MUST be included (contrary to [REPORT])
It should say:
This part MUST be included if the entity creating the report has received the message.
Reports can be created from info collected in SMTP transactions that don't accept a message, a scenario we didn't consider when we wrote this section.