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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 report cconfusion

Having trouble interpreting a dmarc report (from Google). Our dmarc policy is currently set to quarantine. NOT.OUR.IP.ADDRESS 1 …
jcrow
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Setting up DNS records for my mail server - DMARC and SPF - add to all domains or just the mail server domain?

I have a mail server with the domain mail.creoconcept.com I have many clients that use my email service, each with their own domain. I'm setting up DMARC and SPF records for my server. I've added the following records to the domain…
Creoconcept Comunicação
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Mailchimp DMARC Failures 4% of the time

Here is my weekly Postmark DMARC Digest. I currently have an allow-all DMARC policy. My last 4 weekly digests have all looked pretty similar as far as DKIM and SPF failures. DMARC Report I know that Mailchimp can't be SPF-aligned because of the way…
Daniel
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MTA-STS TLS Reporting - why is no policy found for Google but Microsoft and other domains find and report success for new sts policy. 100% success

I am 2+ weeks after deploying MTA-STS policy in testing mode. I am getting TLS Reporting from several domains. Google Inc reports “no policy found”. All other domains find and apply the sts policy. All domains report 100% success. I’m stumped why…
washingon
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When an e-mail message fails MTA-STS checks, it must not be delivered; will the sender be informed about the delivery failure? When?

Short: When an e-mail message about to be send fails MTA-STS checks, it must not be delivered by design; will the sender be informed about the delivery failure? When? Long & Background info: When implementing mta-sts on custom domains to enforce the…
A71
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SPF Include Statements Still Not Passing

Like many others, I have navigated the SPF/DKIM/DMARC world with some confusion. About 4 weeks ago or so I finished setting everything (SPF/DKIM/DMARC) up correctly for a GoDaddy-hosted domain that uses Google's mailservers. I set the _dmarc TXT…
Fishcakes
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how mail server decide whether sender is a spammer by screening SPF

I tried to find the answer from google but all result is showing why SPF is important instead of explain the working mechanism and how mail server(gmail, microsoft, smartermail, etc) implement it, generally. Below is the criteria in came out but…
Jerry
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SPF / DKIM / DMARC with AWS SES dns setup

I've been trying to figure out how to set up DNS for the domain that we use to distribute emails via AWS SES API. Taking domain like example.com I have verified DKIM by using 3 generated CNAME records. I then enabled MAIL FROM Doman, where I was…
Sebastian Sulinski
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Can anyone on the same shared hosting send emails using my domain with a PASS on both SPF and DKIM?

I have multiple domains pointing at nameservers of a shared hosting platform and manage all the emails of these domains using just one address called hello@domain-a.com as an example. Because all of these domains work under one business and I don't…
Vakuya
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Why SPF fail and DKIM passed in DMARC reports?

My domain( e.g. xyz.com) email is hosted on Gsuite. I am trying to set up DMARC for my domain. On the first day, I have received aggregate reports from multiple mail servers. in these reports, I found my domain using some other service(subscription,…
Laxman Singh Rajpurohit
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Postfix. OpenDmarc reject all mails. 5.7.1 rejected by DMARC policy

I activated opendmarc on my server but it rejects all emails. I've tried sending with emails from google and yahoo and it doesn't work Any idea what could be wrong? 5.7.1 rejected by DMARC policy for remoteserver.domain.ltd 5.7.1 rejected by DMARC…
Adam
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Postfix spf - delivers spoofing emails. Not fail

I started receiving spoofing emails. So I set up my server and domain but I still receive emails. SPF is not rejecting emails. Can anyone help? dns records myserver.com. IN TXT "v=spf1 a mx a:myserver.com ip4:50.111.111.111…
Adam
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Why can't I send emails with my domain name emails without deliverability issues?

I have separate my website and email hosting. I use yandex smail service for email hosting. Everytime I send and email to an address, I get no dkim authentication issue even though, I have configured spf, dkim and dmarc in my dns zone. For example,…
Superhuman
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DKIM fails for potion of the emails sent from server, according to DMARC report, what could be the cause?

I see in the report from Google that from the server IP address a potion of email failed. What could be the reason for that? (That DKIM passes for some emails, while it fails for others.) Report shapshot: …
Mladen Adamovic
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Why don't we use FROM header in SPF

I was reading about SPF lately and got to know that SPF fails to identify spoofing when the spammer sends email with the envelope-from pointing to a domain that he/she controls and there is a completely different domain that the receiving client…
Abhishek Arya
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