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- 13 minutes read
Apple Branded Mail: Authentication-First Setup
Apple Branded Mail: Authentication-First Setup
Apple Branded Mail displays your logo in Apple Mail, but only when DMARC is set to quarantine or reject. Learn more in our authentication-first setup guide.
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All blog articles
- 11 minutes read
Security Reporting Built from Your DMARC Data
See how CISOs can turn existing DMARC data into board-ready security reporting, without adding extra work for their teams.
- 9 minutes read
Compliance Audit Findings: What to Fix First
Learn how to sequence DMARC, SPF, and DKIM fixes after a compliance audit by ranking findings on domain criticality and severity.
- 14 minutes read
No SPF Record Found? What It Means and Safe Fixes
No SPF record found doesn’t mean email stops working, but it removes a layer of sender authorization. Here’s how to assess risk and remediate safely.
- 11 minutes read
SPF Validation Alone Won’t Stop Email Failure
Your SPF record can pass every validation check and still fail in production. See why SPF validation alone isn’t enough for enterprise security teams.
- 11 minutes read
MTA Market Shifts: What Domain Owners Should Know
No SPF record found doesn’t mean email stops working, but it removes a layer of sender authorization. Here’s how to assess risk and remediate safely.
- 14 minutes read
VENOM’s PhaaS Platform Outsmarts MFA for Months
VENOM, a closed-access PhaaS platform, used two credential theft modes to bypass MFA and target C-suite executives undetected for nine months.
- 10 minutes read
Why Continuous DMARC Monitoring Matters
Continuous DMARC monitoring catches authentication drift from new vendors and tools before they cause security or deliverability issues.
- 10 minutes read
SPF Record Audit: A Step-by-Step Workflow
An SPF record audit checks syntax, lookup count, and sender mapping. See the five-step workflow to fix issues without disrupting email flow.
- 13 minutes read
Abnormal and Sendmarc: Integrated Cybersecurity
See how Abnormal and Sendmarc protect your inbox, your domain, and everyone who receives email on your company’s behalf.
- 12 minutes read
DMARC XML Reports Explained: Key Fields to Check
DMARC XML reports hold key fields most teams skim past. See what source_ip, policy_evaluated, and disposition are actually telling you.
- 9 minutes read
DKIM Key Rotation Guide for Compliance Teams
A practical guide to DKIM key rotation for compliance teams, covering key length, selector inventory, and the documentation auditors expect to see.
- 10 minutes read
DKIM Signature: Creation and Compromise
Learn how a DKIM signature is created and verified, and what happens to your email security once the private key is compromised.
- 11 minutes read
SPF Record Creation Guide for Enterprise Teams
A practical guide to SPF record creation at scale, covering lookup limits, subdomain policy, and the governance structure enterprises need to maintain SPF.
- 10 minutes read
Getting SPF Record Structure Right at Scale
SPF record structure decisions determine whether your record hits the DNS lookup limit. Explore flattening, macros, and qualifier options that hold up at scale.
- 11 minutes read
SPF Audit Checklist for Multi-Vendor Environments
This SPF audit checklist covers sender inventory, DNS review, and monitoring readiness before SPF record creation begins.
- 10 minutes read
Subdomain Records vs. Root Domain Records
Subdomain records isolate senders and lookup counts. See when enterprises should use them instead of one root domain record.
- 10 minutes read
Enterprise SPF Configuration Done Right
Enterprise SPF configuration can look fine until just one more vendor causes it to fail. See real record examples, plus how to audit yours.
- 11 minutes read
SPF a Record Risk: What It May Authorize
Learn how your SPF a record can authorize infrastructure you don’t control, and follow audit steps to catch spoofing exposure before it’s exploited.