Questions tagged [dkim]

DomainKeys Identified Mail (DKIM) is a method for associating a domain name to an email message, thereby allowing a person, role, or organization to claim some responsibility for the message. The association is set up by means of a digital signature which can be validated by recipients.

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Can I replace rua entry with ruf in DMARC record?

I currently have a DMARC record set up like this: v=DMARC1; p=none; fo=1; rua=mailto:hello@example.com but I am receiving a lot of reports everyday. I would like to only receive failure reports (...
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Intermittent DKIM authentication failing

We are recently deploying DMARC and seeking additional details about an issue. DMARC is configured in the most basic way: v=DMARC1; p=none; rua=mailto:dmarcreports@example.com Our primary server ...
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5 votes
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How to handle duplicate DKIM selectors?

Background When using third party tools which send mails from your domain, you often need to setup DKIM records with selectors defined by the third party. E.g. for MailChimp you're asked to setup: ...
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Sending email via MailChimp with 2 different "from" emails causes vastly different stats

I have two domains: abc.example xyz.example Both have the same DMARC and DKIM DNS records (relative to their own domain), both have same scores when checking black lists, mail tests sites etc ...
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Gsuite - Mailed-by and from. How to have a mailed-by as subdomain but the from is the primary domain - in gSuite (Gmail)

I want to have my email "from" to be from my primary email (gSuite), adn the mailed-by be from my subdomain (which I have added to my Gsuite account). Is this possible in GSuite? I know ...
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1 vote
1 answer
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Is DMARC relaxed alignment for SPF/DKIM bad?

After studying authentication mechanisms available to prevent e-mail spoofing, still I don't understand how to choose between the relaxed alignment and the strict alignment in DMARC for SPF and DKIM, ...
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1 answer
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How to find the DKIM selector without being the owner of the domain? [closed]

it seems the emails of my client are always landing in my Spam folder. I suspect his DKIM TXT record is missing (or even the subdomain at all). I would like to validate this before suggesting help on ...
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2 votes
3 answers
1k views

Do subdomains inherit DKIM keys? Can a DKIM SDID for one domain be used to validly sign mail that appears to be sent from another domain?

Suppose no DKIM keys are defined for sub.example.com, but a key with selector mykey is defined for example.com; that is, a DKIM record exists at mykey._domainkey.example.com in the DNS. Can <alice@...
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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 ...
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1 vote
1 answer
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If I have 2 services sending email using my domain name, can I set up DKIM for one but not the other?

I develop WordPress websites and frequently create contact forms that send email with a From address using the domain name of the website. Typically the business that the website is for is already ...
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2 votes
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DMARC report: systematic SPF failure for a domain

I get DMARC reports sent from various different sources. All of the reports generally have <result>pass</result> for all of the sections. However, the reports from Google always have SPF ...
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1 vote
1 answer
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DKIM fails in DMARC report but not when checked independantly

I've been getting DMARC reports for a new domain I setup saying that the DKIM check is failing. The emails don't get blocked because I haven't set it up to be quarantined or blocked yet. If I check ...
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9 votes
2 answers
1k views

Why is google.com trying to send emails from my domain?

I pulled up a DMARC Analyzer report showing emails received on behalf of my domain: In addition to my normal authorized (SPF+DKIM aligned) personal emails from the protonmail.ch domain, there are ...
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3 votes
1 answer
686 views

DMARC failure on forwarded SharePoint Online emails

I have a client that uses SharePoint Online but insists on using Gmail. Each user has a O365 account with an Exchange Online mailbox and mail flow/delivery options are set to forward all incoming mail ...
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SPF and DKIM vs email forwarding addresses: how to avoid being rejected as spam? [closed]

Situation: I am sending emails from me@mydomain.com to alice@example.org. My DNS for mydomain.com is correctly configured with an SPF record. The recipient at example.org is able to receive my emails ...
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3 votes
1 answer
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DKIM fails for Gmail only. Emails in spam

I've been banging my head at this for 2 days. I've installed a fresh copy of Virtualmin and I enabled DKIM as mentioned in the documentation. Everything went fine. I've added spf and dkim records in ...
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2 votes
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Can I delete TXT record after DKIM configuration?

I've added a TXT record to my domain DNS configuration in order to configure DKIM. Can I delete that TXT record after DKIM configuration?
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2 votes
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DKIM Key Implementation

I am trying to implement DKIM for my contact forms, and have the required DKIM key from my DirectAdmin control panel. I also assume it is a 1024-bit key since there is an "rsa" reference in the same ...
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5 votes
1 answer
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How do email spam filters tell if a spam email was maliciously sent with intent to shutdown a real email address?

So for example, let's say we have a legitimate user from "user@legitimate.com" who sends real emails. However, there is a malicious individual who is using their own server or some other email service ...
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0 answers
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Problems with replying to Mailchimp Campaigns at forwarding addresses

I have used MailChimp for a few years without any problems. I set the campaigns up with different reply to email addresses and all was well. But one provider I know was blocking and bouncing emails ...
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my website can no longer send email and I didn't even change the code [duplicate]

After receiving reports from my website assistant that he was unable to receive email resulting from a user performing an action that would generate an email to him, I decided to test a function on my ...
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3 votes
0 answers
239 views

WHM's Exim Advanced Editor not accepting settings for DKIM

I'm running Centos 6.7 and WHM 54.0, with Exim running on it: Exim version 4.86_1 #1 built 04-Mar-2016 17:12:16 I'm trying to configure DKIM for my outbound mail, which in part I've mostly got ...
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2 votes
2 answers
234 views

Are SPF and DKIM records needed when the SMTP IP is marked as a subscriber block?

I have been searching around, but not sure of all the facts I need. Let me explain. I have stayed out of the SMTP game for a while and have become ignorant of the newer developments. Prior to my ...
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8 votes
3 answers
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DMARC: SPF Fail, DKIM Pass, Source IP: not mine!

This is an odd one: <record> <row> <source_ip>65.20.0.12</source_ip> <count>2</count> <policy_evaluated> <...
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20 votes
1 answer
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Do SPF and DKIM TXT records require quotes?

I have been searching for some hours now, but multiple sources say different things. https://support.wordfly.com/hc/en-us/articles/204767474-How-do-we-publish-DKIM-and-SPF-in-our-DNS- States I should ...
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1 vote
0 answers
305 views

Determining DKIM Selector and Key Values for my domain, hosted on 1&1 [closed]

I have a client that is with 1&1 (yeah, I know). He's asked me to set up SPF and DKIM records for his domain. I am not experienced with email configuration (I'm just a lowly web developer) but I ...
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2 votes
2 answers
4k views

Creating a custom DKIM (Domain Authentication) in DNS settings

I'm trying to do the following as told by MailChimp: Set a TXT (SPF) record for lakesentrancesurflifesaving.org.au to: v=spf1 include:servers.mcsv.net ?all Set the CNAME record for k1._domainkey....
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2 votes
1 answer
4k views

aws - DKIM Signing:waiting on sender verification

I followed this doc to setup easy dkim on server. After updating dns server as said in doc DKIM Verification Status changed to verified but DKIM Signing status still on waiting on sender verification....
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1 vote
1 answer
308 views

Where to place the SPF records and Google Apps DKIM on a multidomain website?

We're having issues with spam filters with our emails. They're not being received by our clients about half of the time. We decided to make sure the SPF and DKIM are correctly set. Suppose I have a ...
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1 vote
1 answer
1k views

SPF, Domainkey, DKIM do not work in plesk 12

I followed tons of online tutorials, guides and even the post here about setting up SPF records in Plesk 11. I'm using plesk 12 on Ubuntu 12. I have set the following: *.webmail.gecab.nl. CNAME ...
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1 vote
1 answer
391 views

How do I add an spf for a Postmark App sender signature when there's an existing spf record?

I'm using the Postmark App service ( https://postmarkapp.com/) to handle the transactional mail delivery for my web app and I set up a sender signature email address ( welcome@somedomain.com ) for it ...
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14 votes
3 answers
32k views

Sent emails pass SPF and DKIM, but fail DMARC when received by Gmail

Gmail is marking my email messages as Spam. The messages pass SPF and DKIM, but fail DMARC. Is there some way to make my messages pass DMARC? I recently signed up for WordPress hosting at Flywheel, ...
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