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ACSP Suggestion 2017.11: Mailing List Support of DMARC

Suggestion

Author:
Adam Brenner
Submitted On:
26 April 2017

Description: All ARIN mailing lists do NOT support senders with DMARC records.

What this means is that senders who have DMARC enabled will be able to post to the mailman mailing list (and it will show up online via the archives), but when mailman distributes (relays) the senders message to all users subscribed to that list, each users MTA's will reject the message.

This is currently happening to the open consult http://lists.arin.net/pipermail/arin-consult/2017-April/000792.html mailing list, as just ONE example. The implications of not fixing this is tremendous.

More information published by Mailman: https://wiki.list.org/DEV/DMARC

Value to Community: If implemented, community will be able to *resume* interacting with one another via the current mailing lists.

Timeframe: Not specified

Status:
Open
Updated:
11 May 2017

Tracking Information

ARIN Comment

11 May 2017

Thank you for your suggestion, numbered 2017.11 upon confirmed receipt, that suggests ARIN add DMARC support to our mailing lists.

It is not clear if it is presently possible to operate a mailing list in a manner which meets both existing community expectations for mailing list behavior and also aligns with DMARC's expectations regarding header/sender alignment. As a result of your suggestion, we are researching the use of DMARC on ARIN's mailing lists to determine how it may be accommodated with a minimum of impact to participants in the ARIN community. As part of that research, we will open a community consultation on this topic by Q3 of 2017.

Thank you for participating in the ARIN Consultation and Suggestion Process. Your suggestion will remain open until a determination is made regarding implementation.

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