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[ietf-smtp] ietf-smtp(_at_)ietf(_dot_)org and DMARC with p=quarantine; pct=0

2019-01-25 05:30:04

for the message

To: ietf-smtp(_at_)ietf(_dot_)org
Message-ID: <de23b577-5e3a-fb2c-2af8-0aa1bcd9f68f(_at_)evert(_dot_)net>
Date: Thu, 17 Jan 2019 10:43:41 +0100
Subject: Re: [ietf-smtp] SMTP Over TLS on Port 26 - Implicit TLS Proposal
Sender: "ietf-smtp" <ietf-smtp-bounces(_at_)ietf(_dot_)org>
X-Original-From: Evert Mouw <post(_at_)evert(_dot_)net>
From: Evert Mouw <post=40evert(_dot_)net(_at_)dmarc(_dot_)ietf(_dot_)org>

DNS TXT is “v=DMARC1; p=reject; fo=1; 
rua=mailto:post(_at_)evert(_dot_)net; ruf=mailto:post(_at_)evert(_dot_)net;”, 
the MLM
changed From: and no reports were generated, based on broken DMARC policy.  
Likewise for the message:

Date: Wed, 16 Jan 2019 10:20:23 -0800
To: Gene Hightower <gene(_at_)digilicious(_dot_)com>
Cc: John R Levine <johnl(_at_)taugh(_dot_)com>, ietf-smtp 
Sender: "ietf-smtp" <ietf-smtp-bounces(_at_)ietf(_dot_)org>
X-Original-From: John Bucy <jbucy(_at_)google(_dot_)com>
From: John Bucy <jbucy=40google(_dot_)com(_at_)dmarc(_dot_)ietf(_dot_)org>

DNS TXT is “v=DMARC1; p=reject; 
rua=mailto:mailauth-reports(_at_)google(_dot_)com”, the MLM changed From: and no
DMARC failure reports are generated.

For the messages from, like:

From: "Salz, Rich" <rsalz(_at_)akamai(_dot_)com>
To: John R Levine <johnl(_at_)taugh(_dot_)com>, John C Klensin 
Date: Fri, 25 Jan 2019 01:44:30 +0000
Message-ID: <3A9DDEF3-8F7C-46B0-AE50-F495BF73644F(_at_)akamai(_dot_)com>
Subject: Re: [ietf-smtp] [Uta] New Version Notification for
Cc: "uta(_at_)ietf(_dot_)org" <uta(_at_)ietf(_dot_)org>, 
"ietf-smtp(_at_)ietf(_dot_)org" <ietf-smtp(_at_)ietf(_dot_)org>
Sender: "ietf-smtp" <ietf-smtp-bounces(_at_)ietf(_dot_)org>

DNS TXT contains “v=DMARC1; p=quarantine; pct=0; 
rua=mailto:akamai(_at_)rua(_dot_)agari(_dot_)com, mailto:
ruf=mailto:akamai(_at_)ruf(_dot_)agari(_dot_)com; sp=none”.  The MLM does not 
rewrite From:.  Delivering the
email to the mailing lists recipients leads to failed DMARC and a (not 
aggregated) report is generated per delivered

Shouldn’t ietf-smtp(_at_)ietf(_dot_)org change the From:, when for the domain 
p=quarantine is set, just as for p=reject, in order
to avoid generating useless reports, and ensuring delivered emails? (Handling 
“quarantine” as “reject” on the
recipients’ side is not neccesary wrong).


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