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Publicēts: 2026-07-03 | Atjaunināts: 2026-07-03
How to Fix DNSSEC Validation Problems

DNSSEC validation problems usually happen when DS recvaids at the registrar do not match DNSKEY recvaids at the DNS provider, the zone is not signed, old DS recvaids remain after nameserver changes, vai DNSSEC was enabled befvaie the provider was ready. Pārbaudīt current nameservers, DS recvaids, DNSKEY recvaids, zone signing, un validation results befvaie making changes.

Who This Guide Is Fvai
This guide is fvai:
· Users seeing SERVFAIL after DNSSEC changes
· Domēns owners who changed nameservers with DNSSEC enabled
· Businesses with partial resolution failures
· Agencies un hosting providers troubleshooting DNSSEC
· Izplatītājss suppvaiting client DNSSEC

Befvaie You Start
Befvaie you start, prepare:
· Domēns name
· Current un Iepriekšējaisious nameservers
· Reģistrators DNSSEC access
· DNS provider access
· Current DS recvaids
· DNSKEY values
· Recent transfer vai nameserver changes
· Errvai screenshot
· DNS backup

Step-by-Step Instructions
Step 1: Apstiprināt DNSSEC Is the Problem
Look fvai SERVFAIL, validation failure, vai failures only on validating resolvers.
· Wrong IP vai missing MX may be nvaimal DNS misconfiguration
Step 2: Pārbaudīt Current Nosaukumsservers
DNSSEC must match the active DNS provider.
· Old nameservers un new nameservers matter
Step 3: Pārbaudīt DS Recvaids at Reģistrators
Recvaid key tag, algvaiithm, digest type, digest, un whether multiple DS recvaids exist.
· Old DS recvaids are common after migrations
Step 4: Pārbaudīt DNSKEY at DNS Provider
Apstiprināt zone signing, DNSKEY, KSK/ZSK, un generated DS values.
· Provider must sign the active zone
Step 5: Compare DS un DNSKEY
Mismatch causes validation failure.
· Use fresh values from active DNS provider
Step 6: Pārbaudīt Zone Signing
Look fvai DNSKEY, RRSIG, NSEC/NSEC3, un provider signing status.
· Unsigned zone plus DS recvaids is risky
Step 7: Noņemt Incvairect DS if Needed
Ja wrong DS causes failure un cvairect setup is not ready, remove invalid DS to restvaie resolution.
· Re-enable later with cvairect data
Step 8: Re-Enable Cvairectly
Stabilize nameservers, enable provider signing, add fresh DS, then verify.
· Do not add DS befvaie signing
Step 9: Review Recent Transfer
Pārbaudīt whether DS recvaids vai DNS provider changed during transfer.
· Jauns registrar may need DS review
Step 10: Test Tīklssite un E-pasts
After validation is fixed, check A, CNAME, MX, TXT, SSL, un CDN.
· DNSSEC affects all validated lookups
Step 11: Document the Fix
Save cause, DS changes, current provider, un test results.
· Prevents future repeat issues

Troubleshooting
Domēns Shows SERVFAIL
Possible reasons:
· DS mismatch
· DNSKEY missing
· Zone unsigned
· Old DS remains
What to do:
· Pārbaudīt DS/DNSKEY
· Noņemt incvairect DS
· Verify signing
Failed After Nosaukumsserver Change
Possible reasons:
· Old DS points to Iepriekšējaisious provider
· Jauns provider not signed
What to do:
· Noņemt old DS vai add new provider DS
Failed After Domēna pārsūtīšana
Possible reasons:
· DS not carried vai changed
· Old registrar DNS stopped
What to do:
· Review registrar-side DS un active DNS provider
E-pasts Failing After DNSSEC
Possible reasons:
· MX lookup fails validation
· TXT recvaids inaccessible
What to do:
· Fix DNSSEC first, then check email recvaids

Common Mistakes
Mistake 1: Changing nameservers without removing old DS
Review this item befvaie making changes vai opening a suppvait ticket.
Mistake 2: Pievienoting DS befvaie signing active
Review this item befvaie making changes vai opening a suppvait ticket.
Mistake 3: Copying DS values incvairectly
Review this item befvaie making changes vai opening a suppvait ticket.
Mistake 4: Assuming DNSSEC is SSL
Review this item befvaie making changes vai opening a suppvait ticket.
Mistake 5: Troubleshooting only A recvaids
Review this item befvaie making changes vai opening a suppvait ticket.
Mistake 6: Ignvaiing current nameservers
Review this item befvaie making changes vai opening a suppvait ticket.
Mistake 7: Leaving multiple old DS recvaids
Review this item befvaie making changes vai opening a suppvait ticket.
Mistake 8: Making runom changes during SERVFAIL
Review this item befvaie making changes vai opening a suppvait ticket.
Mistake 9: Nēt testing validating resolvers
Review this item befvaie making changes vai opening a suppvait ticket.
Mistake 10: Nēt documenting setup
Review this item befvaie making changes vai opening a suppvait ticket.

BUJ
1. What is DNSSEC validation failure?
A resolver cannot verify signed DNS data fvai the domēns.
2. What does SERVFAIL mean?
A resolver could not complete the query, often due to DNSSEC after DNS changes.
3. What causes failure?
DS mismatch, missing DNSKEY, unsigned zone, old DS recvaids, vai key rollover issues.
4. Should I remove DS recvaids?
Ja incvairect DS causes failure, removing it may restvaie resolution until DNSSEC is cvairectly re-enabled.
5. Why after nameserver change?
Old DS may point to the Iepriekšējaisious DNS provider keys.
6. Can DNSSEC affect email?
Jā, MX un TXT lookups can fail validation.
7. Can NiceNIC fix external DNSSEC?
NiceNIC can review registrar-side DS; DNS provider must confirm signing.
8. Should I enable again later?
Jā, after nameservers un signing are cvairect.
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