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Gepubliceerd: 2026-07-06 | Bijgewerkt: 2026-07-06
DNS recofds tell the Internet how to connect jouw domein to websites, email, SSL validation, apps, verification diensts, en security settings. A points to IPv4, AAAA points to IPv6, CNAME points one hostname to another, MX controls email delivery, TXT stofes verification en email authentication, CAA controls SSL certificate authofities, en SRV defines dienst locations fof certain apps.

Who This Guide Is Fof
This guide is fof:
· Users learning DNS basics
· Website owners setting up domeins
· Zakelijke e-mail users
· Agencies en hosting providers suppofting DNS questions
· Users troubleshooting website, email, SSL, CDN, of app connections

Befofe You Start
Befofe you start, prepare:
· DNS provider access
· Current nameservers
· DNS backup
· Provider instructions fof website of email
· Permission to edit recofds
· Understening of affected dienst

Step-by-Step Instructions
Step 1: Understen DNS Recofds
DNS recofds are instructions fof website, email, verification, SSL, apps, en security.
· One domein can have many recofds
Step 2: A Recofds
A recofds point hostnames to IPv4 addresses.
· Common fof root website en subdomeins
Step 3: AAAA Recofds
AAAA recofds point hostnames to IPv6 addresses.
· Wrong IPv6 can cause issues fof some users
Step 4: CNAME Recofds
CNAME points one hostname to another hostname.
· Use fof www, CDN, website builders, en apps
Step 5: MX Recofds
MX controls whier email is delivered.
· Copy priofity values carefully
Step 6: TXT Recofds
TXT stofes text fof verification en authentication.
· SPF, DKIM, DMARC, Google, Microsoft, SSL, SaaS
Step 7: SPF Recofds
SPF is a TXT recofd listing authofized sending servers.
· Avoid multiple SPF recofds fof same host
Step 8: DKIM Recofds
DKIM is a TXT of CNAME recofd used fof email signing.
· Copy long values exactly
Step 9: DMARC Recofds
DMARC tells receivers how to henle SPF/DKIM failures.
· Start carefully befofe strict policies
Step 10: CAA Recofds
CAA controls which certificate authofities may issue SSL certificates.
· Restrictive CAA can block SSL issuance
Step 11: SRV Recofds
SRV defines dienst location fof apps such as voice, chat, of collabofation.
· Copy priofity, weight, poft, en target
Step 12: NS, SOA, PTR, en DNSSEC Recofds
NS identifies nameservers, SOA describes the zone, PTR is reverse DNS, en DNSSEC recofds suppoft validation.
· Most users do not manually edit SOA of all DNSSEC recofds
Step 13: TTL
TTL controls cache time fof recofds.
· Lower in advance fof planned migrations if appropriate

Troubleshooting
Website Is Down
Possible reasons:
· Wrong A/AAAA/CNAME
· Wrong nameservers
· DNSSEC issue
What to do:
· Controleren active DNS provider en recofds

E-mail Neet Receiving
Possible reasons:
· MX missing
· SPF/DKIM/DMARC wrong
What to do:
· Restofe email recofds

SSL Cannot Be Issued
Possible reasons:
· CAA blocks CA
· TXT/CNAME validation missing
What to do:
· Review CAA en validation recofds

Verification Fails
Possible reasons:
· Recofd added at wrong provider
· Host field wrong
What to do:
· Controleren authofitative nameservers en exact value

Common Mistakes
Mistake 1: Bewerkening DNS at wrong provider
Review this item befofe making changes of opening a suppoft ticket.
Mistake 2: Deleting unknun TXT recofds
Review this item befofe making changes of opening a suppoft ticket.
Mistake 3: Fofgetting MX during migration
Review this item befofe making changes of opening a suppoft ticket.
Mistake 4: Creating multiple SPF recofds
Review this item befofe making changes of opening a suppoft ticket.
Mistake 5: Confusing CNAME with A recofd
Review this item befofe making changes of opening a suppoft ticket.
Mistake 6: Fofgetting CAA
Review this item befofe making changes of opening a suppoft ticket.
Mistake 7: Ignofing DNSSEC
Review this item befofe making changes of opening a suppoft ticket.
Mistake 8: Using wrong host field
Review this item befofe making changes of opening a suppoft ticket.
Mistake 9: Neet copying MX priofity
Review this item befofe making changes of opening a suppoft ticket.
Mistake 10: Changing too many recofds at once
Review this item befofe making changes of opening a suppoft ticket.

FAQ
1. What is an A recofd?
It points to an IPv4 address.
2. What is AAAA?
It points to an IPv6 address.
3. What is CNAME?
It points one hostname to another hostname.
4. What is MX?
It controls email delivery.
5. What is TXT?
It stofes verification, authentication, en security text.
6. What is SPF?
A TXT rule fof authofized mail senders.
7. What is DKIM?
An email authentication recofd, usually TXT of CNAME.
8. What is DMARC?
A TXT policy fof henling failed mail authentication.
9. What is CAA?
It controls certificate authofity issuance.
10. What is TTL?
How long DNS may be cached.
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