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Questions tagged [dmarc]

DMARC, (Domain-based Message Authentication, Reporting & Conformance), is a technical specification standardizing how email receivers perform email authentication using the well-known SPF and DKIM mechanisms.

DMARC, (Domain-based Message Authentication, Reporting & Conformance), is a technical specification standardizing how email receivers perform email authentication using the well-known SPF and DKIM mechanisms.

http://www.dmarc.org/

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DMARC behaviour on Gmail

We've configured SPF, DKIM and DMARC records for our domain and they're working fine. Our DMARC reports from Gmail, Hotmail, Yahoo also confirm the same. However, just last week, one of our (Gmail) users brought to our attention a fraudulent email…
ainvehi
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Detecting DKIM and DMARC settings

I am trying to build a tool to check for the presence of DKIM and DMARC for a particular domain. The issue with detecting DKIM is that I cannot check the TXT record of the domain because the DKIM selector is unknown to me as this is a query that…
sousdev
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Setting up SPF, DKIM and Sender ID with Google Cloud DNS, G Suite and WHM / cPanel Server

I just migrated to a new server (CENTOS 6.8 x86_64 virtuozzo – vps1909 WHM 58.0 (build 37)). I decided to use Google Cloud DNS instead to manage my DNS zones instead of WHM. I'm having a really hard time setting up email via G Suite for all my…
Fred
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Reply-to ignored in emails sent on behalf of user on other domains

We offer a function to send an article by email to a friend's personal email. We would like the friend to be able to continue the conversation simply by replying to the email. To avoid yahoo, hotmail, etc. to flag the emails as spam due to dmarc…
Toto
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How to find the specific email causing DMARC failure?

I've implemented a DMARC policy on a few domains and am closely monitoring the reports I'm receiving from Google, Yahoo, Hotmail etc etc, looking forward to being able to switch from p=none to p=reject. 99% of all emails from the appropriate IPs are…
Claud
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Mail-tester says DMARC missing, but it's not?

I'm scoring 9/10 on mail-tester.com. My -1 comes from this, "You do not have a DMARC record" In my DNS (cPanel>"Advanced DNS Zone Editor") I have this DMARC record _dmarc.mycooldomain.com. 14400 IN TXT "v=DMARC1; p=none; sp=none;…
NotUncleBob
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Email Automation for SaaS product

we are trying to automate outgoing emails for our SaaS product. Currently, each customer is required to configure their own smtp server which are used to send emails from their account (and from their domain), but we are looking at automating this…
Raj
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How to retrieve DMARC record of DNS using java api?

I want to retrieve the DMARC related record of DNS. This has been implemented by this
Sudarshan
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Google Check MX email setup checker says: MTA STS is malformed

I have a new domain ausset.au. I've set up all recommended email security features, like SPF, DKIM, DMARC, and MTA-STS. When I check the setup with MxToolbox everything seems to be fine, including MTA-STS. But when I use the Check MX email setup…
miu
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Gmail DMARC/DKIM/SPF results vs. DMARC reports

I recently noticed a discrepancy between Gmail's DMARC/DKIM/SPF results for messages sent via my mailserver as represented in the mail headers – ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@domain.com header.s=s42…
janeden
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Understanding DMARC report - showing spf pass and fail

I've recently set up DMARC and am receiving reports from Google such as the one below (as you can see Amazon SES sends our emails). I'm struggling to understand that in the section it shows both dkim and spf as pass, but then says spf…
bynack
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RSPAMD not sending out reports

Since some time our DMARC reports won't get send out. If we do rspamadm dmarc_report -v -n 20230612 we see the e-mail that should be send out but if we do: rspamadm dmarc_report -v 20230612 it tells us: send data for 0 domains (from 1 to…
Lars
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Why do I see Mimecast under "unknown sources" in my weekly DMARC digest emails?

I recently received a DMARC report for a domain where it showed that 15 emails appeared to be sent from mimecast.co.za servers but were not SPF or DKIM aligned. I saw the same problem for another domain - where emails were originating from…
Dagmar
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Why does my dmarc report show fail even though the spf entry says pass?

I use Google Workspace with my domain and have set up dmarc, dkim and spf. Regularly I get dmarc reports like the following, which is from Google: …
user1770422
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DMARC/DKIM and non-ASCII characters

I'm not very familiar with the details of sending email but I'm getting the runaround between a vendor whose system automatically generates outgoing emails with the content I have configured and the Outlook engineers at my organization who have said…
Don Zacharias
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