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Lotus made their stance known on Sender Policy Framework in January through a technote #1227751


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Problem

What is Sender Policy Framework (SPF)? Does Lotus Domino support SPF?

Content


Supporting Information:

Domino 7.x, 6.5.x, and 6.0.x do not support SPF.  An enhancement request was submitted to Quality Engineering as SPR# RCE5XZQTT; however, there are no plans to address it in the Domino 7.x or 6.x code stream.

Formerly known as "Sender Permitted From," SPF, an open source code, is an extension of SMTP.  Because standard functionality of SPF has not yet been published by the Internet Engineering Task Force (IETF), SPF occupies an experimental stage.  A number of competing methods share the goal of preventing SPAM via these sending server-identification records.