Real SPF record examples you can copy and adapt. Covers Microsoft 365, Google Workspace, Mailchimp, SendGrid, Salesforce, subdomain splits, and non-sending domain lockdown, with a full syntax breakdown for each one.
James Bowers II
If your DKIM signature is failing, the error messages rarely tell you what actually broke. This guide walks through every common DKIM signature failure, from missing signatures and body hash mismatches to bad selectors and DNS split-string issues, with the exact fix for each. By the end you will know how to decode any DKIM error and publish a signature that verifies cleanly everywhere it matters.
James Bowers II
Sometimes the fastest way to understand DKIM is to see a working record next to an explanation of each part. This guide gives you real DKIM record examples for every common setup, from Google Workspace and Microsoft 365 to Mailchimp, SendGrid, HubSpot, and a self-hosted signer. Each example includes a full tag breakdown, a note on CNAME versus TXT publishing, and a copy-paste template you can adapt.
James Bowers II
SPF failing and you don't know why? This step-by-step guide covers every common SPF error, multiple records, the 10-lookup limit, syntax, qualifiers, forwarding, permerror, and more, with the exact fix and a verify step for each one.
James Bowers II