Our blog shares expert insights on email security, DMARC configuration, and deliverability optimization.
Set up HubSpot DKIM by connecting an email sending domain, publishing two CNAME records, reviewing SPF and DMARC, and verifying authentication.
Set up DKIM for Office 365 and Microsoft 365 with selector CNAME records, the Defender portal, Exchange Online PowerShell checks, and DMARC alignment verification.
Set up Mailchimp DKIM by verifying your domain, publishing Mailchimp's two CNAME records, adding DMARC, and checking authentication status.
Set up Salesforce DKIM by creating primary and alternate selectors, publishing CNAME records, activating the key, and verifying DMARC alignment.
The Return-Path is not the address your users see, but it still plays a critical role in email authentication. Learn how the SMTP envelope, SPF, bounces, and DMARC alignment fit together.
OVH has a built-in DMARC generator, but it doesn't support all DMARC tags. Here's how to add a proper DMARC TXT record in OVH's DNS zone, why you should skip their wizard, and how to actually monitor what happens next.
GoDaddy publishes SPF as a TXT record at your root domain. Here's how to check whether SPF already exists, add or edit the record, and verify it without creating duplicates.
aspf=r is relaxed SPF alignment (subdomains align); aspf=s is strict (exact match). Both aspf and adkim default to r. Lookup table and pass/fail examples inside.
SPF failures show up in your DMARC reports or email headers, but the reason is not always obvious. We break down the common causes of SPF failures and walk through practical troubleshooting steps.
Microsoft 365 doesn't enable DMARC by default. Here's how to configure SPF, DKIM, and DMARC properly for your custom domain, avoid common pitfalls, and actually monitor what's happening.
GoDaddy's DNS interface lets you add or edit DMARC as a TXT record at _dmarc. Here's the current GoDaddy path, including what to do if a default DMARC record already exists.
Marc's note on the guardrails inside our DMARC generator: report URI cleanup, external destination warnings, old syntax handling, and current DMARC record choices.
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