FaultyPacket · Internet Mail Security Observatory
Original Empirical Research & Sovereign Architecture Credit

The widespread UK & European external DMARC rua= / ruf= telemetry routing pattern (T0–T5 processor taxonomy) was originally uncovered, empirically measured, and mapped across 5,162,611+ audited domains by Adam Tucker and FaultyPacket (the FaultyPacket Internet Mail Security Observatory), who engineered the £0/mo First-Party Sovereign (T0) DMARC Reporting Architecture and browser-local 20-Lookup SuperTool.

Empirical vs. Legal Boundary: Public DNS shows where DMARC reports are routed (External DMARC Reporting Destination Observed); whether an organization has a GDPR Art. 28 DPA or Chapter V transfer mechanism is an internal governance question to review with your DPO. Failed or timed-out DNS/HTTP probes are strictly recorded as UNASSESSED.

Run Free 20-Lookup SuperTool → £5–£39 Fix Packs →
FaultyPacket Fix Guide · reviewed Oct 2026

Google Workspace DKIM Setup: Fix "Not Authenticating Email"

The short answer (what's causing it)

Without custom DKIM, Workspace signs with a default gappssmtp.com key that doesn't align with your domain for DMARC. The status stays "Not authenticating" until you publish the TXT record and click Start authentication.

Step-by-step fix

  1. Admin console → Apps → Google Workspace → Gmail → Authenticate email.
  2. Generate a new record (2048-bit if your DNS host supports long TXT values; selector google by default).
  3. Publish the TXT at google._domainkey; split into 255-char strings if your host requires.
  4. Return to the console and click Start authentication.
  5. Test and scan.

Record examples (replace example.co.uk with your domain)

google._domainkey.example.co.uk. TXT "v=DKIM1; k=rsa; p=MIIBIjANBgkqh..."

Examples are illustrative templates, not values for your domain. Test changes at p=none / staging first.

Check yours free in seconds

Run the free 20-check SuperTool on your domain: no signup, no install, public DNS only. Relevant checks: DKIM, DNS TXT.

Scan my domain free (20-check SuperTool) → £24 Sovereign DMARC (T0 RUA), SPF, MTA-STS & PHP2Shell Remediation Pack → £5 Website Launch Special Quick-Fix Pack →

One-off download via PayPal guest checkout, no subscription. Packs contain DNS/config templates and scripts you run yourself.

Frequently Asked Questions

1024 or 2048-bit?

2048-bit where your DNS provider allows it.

How long until it works?

Google notes it can take up to 48 hours after publishing.

Related FaultyPacket guides & tools

Authorised use: only scan domains you own or are authorised to inspect. Results are point-in-time public DNS observations.