Authentication Responses for Protocols (SMTP, IMAP, POP, etc)

Document Type Expired Internet-Draft (individual)
Author Chris Newman 
Last updated 1998-07-13
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This memo assigns client authentication error codes for those situations where a client may take specific corrective action in the face of a failed authentication attempt. Some of these codes are used by one strategy to transition users away from unencrypted clear text passwords.


Chris Newman (

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