How to fix “Your DKIM signature is not valid” error

How to fix “Your DKIM signature is not valid” error

How to fix “Your DKIM signature is not valid” error

by DuoCircle

 

Email authentication protocols are the foundation of your email security strategy, and even the most seemingly insignificant error can mess up your deliverability and security. One such issue is an invalid DKIM signature, which means there are inaccuracies in your domain’s DomainKeys Identified Mail (DKIM) configuration.

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Configuring DKIM to sign mail from your Microsoft 365 domain

Configuring DKIM to sign mail from your Microsoft 365 domain

 

The main purpose of DKIM is to verify whether a malicious entity tampered with email content in transit. To ensure this, a pair of public and private keys are produced for your domain and used by the source email systems to digitally sign the headers of outgoing messages. This digital signature remains valid until intermediate email systems modify the signed part. The d= value represents the signing domain in the header field.

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How to fix the 550 5.7.26 unauthenticated sender error in Gmail?

How to fix the 550 5.7.26 unauthenticated sender error in Gmail?

How to fix the 550 5.7.26 unauthenticated sender error in Gmail?

by DuoCircle

 

Back in October 2023, Google released its revamped version of email-sending policies, which mandated bulk email senders to comply with the new authentication standards by February 2024. Cut to today: Google has now officially started rolling out these updated policies, and some organizations are receiving the following error message while sending emails:

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A Guide to Checking DMARC Compliance

A Guide to Checking DMARC Compliance

 

DMARC, or Domain-based Message Authentication, Reporting, and Conformance is one of the most important email authentication protocols that helps protect your email domains from phishing, spoofing, and other email-based cyber threats. Perhaps this is why it has now become a norm for organizations that send bulk emails to comply with.

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Kraken Flaw Heist, CDK Cyberattack Hits, AMD Investigates Breach – Cybersecurity News [June 17, 2024]

Kraken Flaw Heist, CDK Cyberattack Hits, AMD Investigates Breach – Cybersecurity News [June 17, 2024]

Kraken Flaw Heist, CDK Cyberattack Hits, AMD Investigates Breach – Cybersecurity News [June 17, 2024]

by DuoCircle

 

Don’t miss out on the latest cybersecurity scoop of the week! We’ll be covering the $3 million stolen from Kraken, the cyberattack that has affected thousands of US car dealerships, the AMD data leakage, fake Chrome errors installing malware on devices, and the cyberattack on the Toronto District School Board. 

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Learning to Use SPF Macros for Reduced Maintenance, Scalability, and Flexibility

Learning to Use SPF Macros for Reduced Maintenance, Scalability, and Flexibility

Learning to Use SPF Macros for Reduced Maintenance, Scalability, and Flexibility

by DuoCircle

 

Flexible and dynamic SPF records are easier to manage and need less frequent updates. Such records are even more significant for organizations with an extensive email ecosystem as they allow scalable SPF configurations.

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Phishing Exploits Windows, CISA Scam Alert, Cleveland Cyber Response – Cybersecurity News [June 10, 2024]

Phishing Exploits Windows, CISA Scam Alert, Cleveland Cyber Response – Cybersecurity News [June 10, 2024]

Phishing Exploits Windows, CISA Scam Alert, Cleveland Cyber Response – Cybersecurity News [June 10, 2024]

by DuoCircle

 

We’re back with cybersecurity’s latest in our latest news piece. This week, there were several cybersecurity threats, including phishing emails that exploit a weakness in Windows Search to deliver malware, impersonation scams by people pretending to be from CISA, a cyberattack that shut down many government services in Cleveland, a new kind of Windows malware called Warmcookie that spreads through fake job postings, and a blood shortage in London hospitals caused by a ransomware attack. Here’s everything about these!

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Enabling DKIM For Your Domain Using the Google Admin Console

Enabling DKIM For Your Domain Using the Google Admin Console

 

No matter what your organization’s size is and how many emails you send in a day, you can be a target of impersonation and phishing attacks. So, ensure all your domains, including the parked ones, are secured with SPF, DKIM, and DMARC. In this guide, we are taking you through the 4 steps to enable DKIM using the Google Admin console.

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A Step-by-Step Guide For Adding SPF, DKIM, and DMARC Records to AWS DNS-Route 53

A Step-by-Step Guide For Adding SPF, DKIM, and DMARC Records to AWS DNS-Route 53

A Step-by-Step Guide For Adding SPF, DKIM, and DMARC Records to AWS DNS-Route 53

by DuoCircle

 

Before you follow these steps, check if your domain’s DNS already has the SPF, DKIM, and DMARC records. Redundancies make all your records invalid, neglecting the responsibility of these email authenticating agents. You can use online SPF, DKIM, and DMARC record lookup tools designed for email security assessment to ascertain this; all you have to do is enter your domain name and the type of record you want it to evaluate for you.

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