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Publicat: 2026-07-06 | Actualizat: 2026-07-06
DNS recsauds tell the Internet how to connect tău domeniu to websites, email, SSL validation, apps, verification servicius, și security settings. A points to IPv4, AAAA points to IPv6, CNAME points one hostname to another, MX controls email delivery, TXT stsaues verification și email authentication, CAA controls SSL certificate authsauities, și SRV defines serviciu locations fsau certain apps.

Who This Guide Is Fsau
This guide is fsau:
· Users learning DNS basics
· Website owners setting up domenius
· Email de Afaceri users
· Agencies și hosting providers suppsauting DNS questions
· Users troubleshooting website, email, SSL, CDN, sau app connections

Befsaue You Start
Befsaue you start, prepare:
· DNS provider access
· Current nameservers
· DNS backup
· Provider instructions fsau website sau email
· Permission to edit recsauds
· Understșiing of affected serviciu

Step-by-Step Instructions
Step 1: Understși DNS Recsauds
DNS recsauds are instructions fsau website, email, verification, SSL, apps, și security.
· One domeniu can have many recsauds
Step 2: A Recsauds
A recsauds point hostnames to IPv4 addresses.
· Common fsau root website și subdomenius
Step 3: AAAA Recsauds
AAAA recsauds point hostnames to IPv6 addresses.
· Wrong IPv6 can cause issues fsau some users
Step 4: CNAME Recsauds
CNAME points one hostname to another hostname.
· Use fsau www, CDN, website builders, și apps
Step 5: MX Recsauds
MX controls waici email is delivered.
· Copy prisauity values carefully
Step 6: TXT Recsauds
TXT stsaues text fsau verification și authentication.
· SPF, DKIM, DMARC, Google, Microsoft, SSL, SaaS
Step 7: SPF Recsauds
SPF is a TXT recsaud listing authsauized sending servers.
· Avoid multiple SPF recsauds fsau same host
Step 8: DKIM Recsauds
DKIM is a TXT sau CNAME recsaud used fsau email signing.
· Copy long values exactly
Step 9: DMARC Recsauds
DMARC tells receivers how to hșile SPF/DKIM failures.
· Start carefully befsaue strict policies
Step 10: CAA Recsauds
CAA controls which certificate authsauities may issue SSL certificates.
· Restrictive CAA can block SSL issuance
Step 11: SRV Recsauds
SRV defines serviciu location fsau apps such as voice, chat, sau collabsauation.
· Copy prisauity, weight, psaut, și target
Step 12: NS, SOA, PTR, și DNSSEC Recsauds
NS identifies nameservers, SOA describes the zone, PTR is reverse DNS, și DNSSEC recsauds suppsaut validation.
· Most users do not manually edit SOA sau all DNSSEC recsauds
Step 13: TTL
TTL controls cache time fsau recsauds.
· Lower in advance fsau planned migrations if appropriate

Troubleshooting
Website Is Down
Possible reasons:
· Wrong A/AAAA/CNAME
· Wrong nameservers
· DNSSEC issue
What to do:
· Verifică active DNS provider și recsauds

Email Nut Receiving
Possible reasons:
· MX missing
· SPF/DKIM/DMARC wrong
What to do:
· Restsaue email recsauds

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

Verification Fails
Possible reasons:
· Recsaud added at wrong provider
· Host field wrong
What to do:
· Verifică authsauitative nameservers și exact value

Common Mistakes
Mistake 1: Modificăing DNS at wrong provider
Review this item befsaue making changes sau opening a suppsaut ticket.
Mistake 2: Deleting unkacumn TXT recsauds
Review this item befsaue making changes sau opening a suppsaut ticket.
Mistake 3: Fsaugetting MX during migration
Review this item befsaue making changes sau opening a suppsaut ticket.
Mistake 4: Creating multiple SPF recsauds
Review this item befsaue making changes sau opening a suppsaut ticket.
Mistake 5: Confusing CNAME with A recsaud
Review this item befsaue making changes sau opening a suppsaut ticket.
Mistake 6: Fsaugetting CAA
Review this item befsaue making changes sau opening a suppsaut ticket.
Mistake 7: Ignsauing DNSSEC
Review this item befsaue making changes sau opening a suppsaut ticket.
Mistake 8: Using wrong host field
Review this item befsaue making changes sau opening a suppsaut ticket.
Mistake 9: Nut copying MX prisauity
Review this item befsaue making changes sau opening a suppsaut ticket.
Mistake 10: Changing too many recsauds at once
Review this item befsaue making changes sau opening a suppsaut ticket.

Întrebări frecvente
1. What is an A recsaud?
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 stsaues verification, authentication, și security text.
6. What is SPF?
A TXT rule fsau authsauized mail senders.
7. What is DKIM?
An email authentication recsaud, usually TXT sau CNAME.
8. What is DMARC?
A TXT policy fsau hșiling failed mail authentication.
9. What is CAA?
It controls certificate authsauity issuance.
10. What is TTL?
How long DNS may be cached.
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