Domain-based Message Authentication, Reporting, and Conformance (DMARC) is a mechanism by which the owner of a domain uses specially formed DNS records to express domain-level policies and preferences for email validation, disposition, and reporting.
Questions tagged [dmarc]
226 questions
2
votes
2 answers
Missing or Invalid DMARC Record in server mail
my main problem is that I am not receiving mails to my domain after adding an MX Server to my domain for mailing in Webmin, and
After testing a server by mxtoolbox.com tool, I found that there is problem in DMARC Records,
it says Missing or Invalid…
Spartan
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1 answer
Why does Yahoo DMARC Report show DKIM is Valid for emails coming from Google's Servers?
My domain name for the below issue is developcents.com, and I run my own Postfix implementation on CentOS 7.
I've had ongoing issues for several months where emails I send from my mail server (running Postfix on a Linode VPS) are sometimes (not…
David W
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1 answer
Mail marked as spam (Gmail/Hotmail): IP not on blacklist, DKIM Valid, SPF Valid and DMARC valid
I'm trying to send mail from my own domain (which is 15 days old now) but I'm having some troubles. Check the following mail body:
Delivered-To: ------@gmail.com
Received: by 10.25.89.200 with SMTP id n191csp1613325lfb;
Mon, 15 Jun 2015…
user1226868
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1 answer
Configure postfix to DKIM-sign emails generated from the system
My web hosting server features a Postfix setup up and running. That postfix is also open with STARTTLS on port 587 for authorized users (only me, myself and I right now) to send emails to any domain after signing it with DKIM.
Every email I send via…
usr-local-ΕΨΗΕΛΩΝ
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1 answer
DKIM & SPF Allignment for Subdomains
We have a primary domain name example.com that has both adkim=s and aspf=s defined in its DMARC policy. Now, we have multiple subdomain names for this primary domain, such as postman.example.com. The subdomain has SPF, DKIM and DMARC TXT records in…
Granwille
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DMARC record is valid, but your domain's None/Quarantine policy does not yet protect it against email spoofing and phishing
People,
Using the website: https://easydmarc.com/tools/dmarc-lookup?domain=name.com
I got this error:
DMARC record is valid, but your domain's None/Quarantine policy does
not yet protect it against email spoofing and phishing.
What does it mean…
Senior Systems Engineer
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1 answer
(Why) Would email servers stop sending DMARC reports because of DKIM?
I have a personal email server I've been running for years; very seldom has there been a problem with sending mail and so I've never really got up to speed with things like SPF, DMARC, and DKIM. Recently, while upgrading the system, I decided to…
goldilocks
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votes
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Why do I get DMARC aggregate reports with no reported failures (G Suite + Amazon SES)?
Domain: franzoni.eu
Such domain leverages G Suite (grandfathered free version) for receiving mail, but for various reasons (I prefer not to create users for M2M SMTP on G Suite, and I cannot use SMTP to send with aliased source addresses) I setup…
Alan Franzoni
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Google G Suite DMARC + SPF + DKIM for user domain aliases fail Google Admin Toolbox CheckMX
I have set up the above in my Google's old G-Suite account for a User Domain Alias but am still getting two warning messages:
https://webcoder.co.uk
There were some non-critical problems detected with the configuration of this domain.
Depending on…
webcoder.co.uk
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2
votes
1 answer
Do I need to tune my DMARC settings (SPF align failure at final delivery)?
I've received my first (ever!) DMARC forensic report, and I'm not sure if it implies I should be setting something differently, or if this is desired behavior, or if it's undesired but there's nothing to be done.
The actual report…
philolegein
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2
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3 answers
Google DMARC Support, DKIM and SPF fail
This morning I received my second email from noreply-dmarc-support and I really don’t understand why. I have tried looking it up and I have seen through forums here that it has to do with emails, but I haven’t sent anything. Would this mean someone…
Celeste Gonzalez
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1 answer
DKIM Key Rotation Best Practices
Do you find it necessary to regenerate your DKIM keys every 1-6 months to avoid your mail going into the receiving servers' junk mail folder?
Some guides recommend this, some even say it's "Best Practice" to do so, but most other guides don't…
Jeff
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Is SPF alignment important with DMARC?
When setting up a DMARC policy for an organization, is it important at all to have SPF alignment?
I've gathered that:
Most email service providers support DKIM for a custom domain.
Not all email service providers support SPF for a custom domain.…
Ralf
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votes
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what is the appropriate DMARC configuration for a domain that should fail hard on DKIM but soft on SPF
Messages sent by my domain will always be DKIM-signed and any that are not should be immediately discarded by recipients. But strict SPF enforcement leads to problems where internal mail-forwarding rules and other sorts of implementation details…
Glyph
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How do I whitelist another sender (e.g. Sendgrid) for DMARC?
We host our own e-mail but use Sendgrid to send mail on behalf of a few internal PHP services that can't easily handle our mail configuration (e.g. they disallow self-signed certs by default, so getting them to connect to our server to send out…
Will Matheson
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