DKIM key is published but revoked
The DKIM record for `your domain` exists but its `p=` tag is empty, which per RFC 6376 means the key has been explicitly revoked — a receiver that finds it will treat this selector as invalid and any signature referencing it fails.
Why it matters
The DKIM record for `your domain` exists but its `p=` tag is empty, which per RFC 6376 means the key has been explicitly revoked — a receiver that finds it will treat this selector as invalid and any signature referencing it fails. Mail sent through your provider using this selector is currently unsigned in practice, identically to having no DKIM record at all.
How ShipReady detects it
Email-authentication DNS records (DMARC / SPF). Almost every AI-built SaaS sends transactional email — password resets, magic links, receipts — through Resend, SendGrid or Postmark. Setting that up gets the mail delivered; it does not stop anyone else sending mail that claims to come from the same domain. Without a DMARC policy, a receiving server has no instruction to reject a forgery, so an attacker can send "reset your password" from the product's own domain and the message will land in the inbox looking authentic. This check is almost entirely DNS rather than HTTP — one exception is MTA-STS, whose policy is only half-published in DNS; the other half is a file fetched over HTTPS (see _check_mta_sts). Nearly everything else here is the most deterministic kind of check the scanner has: a record either exists or it does not, so there is no heuristic and no false-positive surface. The one place judgement is required is deciding WHICH domain to ask about — see _organizational_domain.
Detection is deterministic. ShipReady reports this only when it observes the condition directly, and prefers to miss a real problem over inventing one. Rule version 1.10.0.
How to fix it
This is the prompt ShipReady puts in your report — written to be pasted straight into Cursor, Claude Code, or whichever assistant built the app.
The DKIM record for selector your selector on your domain has an empty p= tag, which is how a key is explicitly revoked rather than simply missing. Mail signed with this selector currently fails DKIM validation everywhere. Go back into your provider dashboard's domain-authentication section and re-generate the DKIM key for this domain, then publish the new (non-empty) p= value it gives you at your selector._domainkey.your domain. If your provider shows the domain as already "verified", toggle DKIM off and back on to force it to issue a fresh key.
Frequently asked questions
- What does "DKIM key is published but revoked" mean?
- The DKIM record for `your domain` exists but its `p=` tag is empty, which per RFC 6376 means the key has been explicitly revoked — a receiver that finds it will treat this selector as invalid and any signature referencing it fails.
- How serious is it?
- ShipReady rates this medium. Fix soon. Meaningfully weakens a defence or degrades how the site works.
- How do I fix it?
- Paste the fix prompt on this page into Cursor, Claude Code or your AI editor. It is the same prompt ShipReady puts in your report.
- Can I check my own site?
- Yes — ShipReady scans up to ten pages of any public site for free and reports this alongside every other check. The free report lists every issue it finds and shows full evidence and a fix prompt for the critical and high-severity ones; medium and low findings are counted and unlock on Pro.
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