CAA monitoring: watch the issuance allow-list before renew fails
CAA monitoring is how you notice the certificate issuance allow-list drifted—deleted after a zone rebuild, republished without your ACME CA, or never restored after a CDN move—before the next renew fails while today’s lock still looks fine. CrowWake’s check is a public CAA resolve plus a live TLS issuer compare, not a full CT-log audit.
What CAA monitoring means here
Operators searching for CAA monitoring or a CAA tester usually want an early rooster: are issue / issuewild rows still published, and does that list still permit the CA on the live certificate? CrowWake answers with apex CAA lookups, summarizes tags, opens port 443 to read the live issuer, and flags missing CAA or a list that excludes today’s CA. It sits beside SSL certificate monitoring so “runway days left” and “who may renew” show up in the same flock.
What CrowWake checks
We resolve CAA at the apex. Missing CAA → warn (common on small sites, still worth noticing after a move). When records exist, we summarize issue / issuewild tags and compare them to the issuer on the live TLS certificate. Allow-list present but live CA not permitted → warn/fail-shaped crow before ACME breaks. The free CAA checker uses the same DNS + issuer pairing with no login—the same signal the hourly probe uses. CrowWake does not scrape Certificate Transparency logs in v1.
Monitoring vs “what is a CAA record”
The CAA record guide explains Certificate Authority Authorization, how to check CAA records with a CAA tester, issue/issuewild shape, and how to publish an allow-list in plain English. Monitoring is the repeat job: catch a deleted CAA after a panel cleanup, a CDN cutover that dropped rows, or a new ACME provider that is not on the list yet. Both use the same free CAA checker; CrowWake just repeats the pulse every hour. Pair with SSL certificate monitoring so expiry runway and issuance permission stay inventoriable together.
What “good enough” looks like
CAA published for every CA that must keep issuing—including ACME behind your host or CDN. issuewild only if you use wildcard certs. Live certificate issuer matches an issue (or issuewild) row. Intentional “no CAA yet” is fine for tiny sites; accidental empty after a migration is not. SSL days-to-expiry can stay green while CAA silently vanishes—watch both.
Quick triage when CAA goes yellow or red
1) Re-run the free CAA checker and read missing vs present issuers plus the live-cert match. 2) If missing, restore issue rows for every CA that renews for you (Let’s Encrypt alone is fine for many sites). 3) If present but live issuer not allowed, add that CA’s issue tag before the next renew. 4) Wait for DNS TTL, re-check, then force a test renew if issuance recently failed. 5) Confirm SSL expiry still looks healthy. 6) Add the domain so CrowWake crows on the next drift instead of waiting for an ACME ticket.
If CrowWake crows
Treat the failing check as source of truth: empty CAA vs mismatched live issuer are different jobs. Use the CAA how-to for tag shape and publish order, re-run the free CAA checker, then keep watching. CrowWake monitors public CAA DNS and the live handshake issuer—it does not create certificates or rewrite your ACME client for you.
Watch this on CrowWake
Add the domain, leave the boxes checked, and the flock will crow when this drifts.
Or try the free CAA monitoring / allow-list checker with no login.
Related: what is a CAA record / how to check CAA records, SSL certificate monitoring, SSL certificate expired, and DNS monitoring (zone wipes often take CAA with them).