draft-ietf-dmarc-psd-03.txt   draft-ietf-dmarc-psd-04.txt 
Network Working Group S. Kitterman Network Working Group S. Kitterman
Internet-Draft fTLD Registry Services Internet-Draft fTLD Registry Services
Intended status: Experimental May 7, 2019 Intended status: Experimental May 27, 2019
Expires: November 8, 2019 Expires: November 28, 2019
DMARC (Domain-based Message Authentication, Reporting, and Conformance) DMARC (Domain-based Message Authentication, Reporting, and Conformance)
Extension For PSDs (Public Suffix Domains) Extension For PSDs (Public Suffix Domains)
draft-ietf-dmarc-psd-03 draft-ietf-dmarc-psd-04
Abstract Abstract
DMARC (Domain-based Message Authentication, Reporting, and DMARC (Domain-based Message Authentication, Reporting, and
Conformance) is a scalable mechanism by which a mail-originating Conformance) is a scalable mechanism by which a mail-originating
organization can express domain-level policies and preferences for organization can express domain-level policies and preferences for
message validation, disposition, and reporting, that a mail-receiving message validation, disposition, and reporting, that a mail-receiving
organization can use to improve mail handling. DMARC policies can be organization can use to improve mail handling. DMARC policies can be
applied at the individual domain level or for a set of domains at the applied at the individual domain level or for a set of domains at the
organizational level. The design of DMARC precludes grouping organizational level. The design of DMARC precludes grouping
skipping to change at page 1, line 43 skipping to change at page 1, line 43
Internet-Drafts are working documents of the Internet Engineering Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF). Note that other groups may also distribute Task Force (IETF). Note that other groups may also distribute
working documents as Internet-Drafts. The list of current Internet- working documents as Internet-Drafts. The list of current Internet-
Drafts is at https://datatracker.ietf.org/drafts/current/. Drafts is at https://datatracker.ietf.org/drafts/current/.
Internet-Drafts are draft documents valid for a maximum of six months Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet-Drafts as reference time. It is inappropriate to use Internet-Drafts as reference
material or to cite them other than as "work in progress." material or to cite them other than as "work in progress."
This Internet-Draft will expire on November 8, 2019. This Internet-Draft will expire on November 28, 2019.
Copyright Notice Copyright Notice
Copyright (c) 2019 IETF Trust and the persons identified as the Copyright (c) 2019 IETF Trust and the persons identified as the
document authors. All rights reserved. document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents Provisions Relating to IETF Documents
(https://trustee.ietf.org/license-info) in effect on the date of (https://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents publication of this document. Please review these documents
skipping to change at page 3, line 42 skipping to change at page 3, line 42
operators of Public Suffix Domains (PSDs) to express policy for operators of Public Suffix Domains (PSDs) to express policy for
groups of subdomains, extends the DMARC [RFC7489] policy query groups of subdomains, extends the DMARC [RFC7489] policy query
functionality to detect and process such a policy, describes receiver functionality to detect and process such a policy, describes receiver
feedback for such policies, and provides controls to mitigate feedback for such policies, and provides controls to mitigate
potential privacy considerations associated with this extension. potential privacy considerations associated with this extension.
As an additional benefit, the PSD DMARC extension will clarify As an additional benefit, the PSD DMARC extension will clarify
existing requirements. Based on the requirements of DMARC [RFC7489], existing requirements. Based on the requirements of DMARC [RFC7489],
DMARC should function above the organizational level for exact domain DMARC should function above the organizational level for exact domain
matches (i.e. if a DMARC record were published for 'example', then matches (i.e. if a DMARC record were published for 'example', then
mail from example@example should be subject to DMARC processing. mail from example@example should be subject to DMARC processing).
Testing had revealed that this is not consistently applied in Testing had revealed that this is not consistently applied in
different implementations. PSD DMARC will help clarify that DMARC is different implementations. PSD DMARC will help clarify that DMARC is
not limited to organizational domains and their sub-domains. not limited to organizational domains and their sub-domains.
There are two types of Public Suffix Operators (PSOs) for which this There are two types of Public Suffix Operators (PSOs) for which this
extension would be useful and appropriate: extension would be useful and appropriate:
o Branded PSDs (e.g., ".google"): These domains are effectively o Branded PSDs (e.g., ".google"): These domains are effectively
Organizational Domains as discussed in DMARC [RFC7489]. They Organizational Domains as discussed in DMARC [RFC7489]. They
control all subdomains of the tree. These are effectively private control all subdomains of the tree. These are effectively private
skipping to change at page 6, line 31 skipping to change at page 6, line 31
"_dmarc.compute.cloudcompany.com.cctld". "_dmarc.compute.cloudcompany.com.cctld".
Note: Because the PSD policy query comes after the Organizational Note: Because the PSD policy query comes after the Organizational
Domain policy query, PSD policy is not used for Organizational Domain policy query, PSD policy is not used for Organizational
domains that have published a DMARC [RFC7489] policy. Specifically, domains that have published a DMARC [RFC7489] policy. Specifically,
this is not a mechanism to provide feedback addresses (RUA/RUF) when this is not a mechanism to provide feedback addresses (RUA/RUF) when
an Organizational Domain has declined to do so. an Organizational Domain has declined to do so.
3.5. Section 7. DMARC Feedback 3.5. Section 7. DMARC Feedback
[RFC7489] Section 7.3 Failure Reports MUST NOT be sent for PSD DMARC.
Operational note for PSD DMARC: For PSOs, feedback for non-existent Operational note for PSD DMARC: For PSOs, feedback for non-existent
domains is desired and useful. See Section 4 for discussion of domains is desired and useful. See Section 4 for discussion of
Privacy Considerations. Privacy Considerations.
4. Privacy Considerations 4. Privacy Considerations
These privacy considerations are developed based on the requiremetns These privacy considerations are developed based on the requiremetns
of [RFC6973]. The Privacy Considerations of [RFC7489] apply to this of [RFC6973]. The Privacy Considerations of [RFC7489] apply to this
document. document.
 End of changes. 5 change blocks. 
7 lines changed or deleted 5 lines changed or added

This html diff was produced by rfcdiff 1.47. The latest version is available from http://tools.ietf.org/tools/rfcdiff/