Designated Mailers Protocol A Way to Identify Hosts Authorized to Send SMTP Traffic

Document Type Expired Internet-Draft (individual)
Last updated 2003-08-26
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Expired & archived
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document describes a proposed standard for identifying host computer systems designated as Simple Mail Transfer Protocol (SMTP) clients for an Internet domain or host through Domain Name System (DNS). This identification allows SMTP servers to verify if a connecting client is allowed to make outgoing SMTP connections on behalf of the client's domain.


Gordon Fecyk (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)