Viewing articles tagged 'dns'
Change a domain’s nameservers
Nameservers decide which DNS provider answers for a domain.Applies to: Nameservers and DNS...
DNS and nameservers for reseller customers
Point each reseller customer domain to the nameservers assigned to the reseller service and...
Set up SPF, DKIM and DMARC records
These records help receiving systems authenticate mail and apply domain policy.Applies to: Email...
DNSSEC availability and changes
DNSSEC is not currently available on Tudor Internet’s standard InterWorx nameservers.Important:...
Manage DNS records
DNS records connect a domain to websites, email and other services.Applies to: Nameservers and...
Microsoft 365 DNS records overview
The admin centre provides the DNS records required for the selected Microsoft services.Applies...
Set reverse DNS for a Dedicated Server address
Create matching forward DNS before assigning a PTR record to an eligible server IP.Applies to:...
Set reverse DNS for a VPS IP address
Reverse DNS maps an assigned IP address to a hostname and is commonly required for correctly...
A, AAAA, CNAME, MX and TXT records explained
Use the record type specified by the service being connected.Applies to: Nameservers and DNS...
Change MX records to Microsoft 365
Coordinate the MX change only after users, mailboxes, aliases and migration arrangements are...
Choose and use a trial.tudornet.uk hostname
A trial hostname is temporary, remains part of the Tudor Internet domain and should not be...
Plan private nameservers for reseller customers
Private nameservers require host or glue records at the registrar, matching DNS service and a...
Roll out DMARC safely from monitoring to enforcement
Start DMARC with reporting, identify every legitimate sender and tighten policy only after SPF...
Test a migrated website before DNS cutover
Test the destination copy before directing public traffic to it.Applies to: Website and email...
DNS change responsibilities
DNS changes can interrupt websites and email and should be planned, recorded and tested.Applies...
DNS propagation and caching
Resolvers can keep old DNS data until the previous TTL expires.Applies to: Nameservers and DNS...
Enable HTTPS on a trial hostname
Issue a certificate for the exact assigned hostname after the SiteWorx account and wildcard DNS...
Point a domain to a VPS
Create DNS records for the services actually hosted on the VPS.Applies to: Virtual Private Server...
Troubleshoot SSL for a reseller customer domain
Certificate issuance must validate the customer hostname against the correct SiteWorx account...
Use a charity domain with Charity Hosting
Charity Hosting does not include a free domain promotion; register, transfer or point an...
Use a club or non-profit domain with hosting
Keep domain ownership with the correct organisation and plan DNS, mail and renewal separately...
Use CAA records without blocking certificate renewal
CAA records can limit certificate issuance, but an incomplete policy may prevent Tudor Internet...
Choose a DNS TTL value
TTL controls how long resolvers may cache a record.Applies to: Nameservers and DNS recordsDNS...
Website not loading after a DNS change
DNS changes may take time to reach recursive resolvers and devices.Applies to: Web Hosting...
Plan DNS changes for Email Spam Filtering
The exact MX hostnames, priorities, delivery destination and outbound relay settings must come...
Register child nameservers and glue records
Glue is required when a domain delegates to nameservers inside that same domain.Applies to:...
Plan a DNS change with minimal downtime
Prepare the destination service and lower risk before changing nameservers or production...
Create and troubleshoot A and AAAA records
A records publish IPv4 destinations and AAAA records publish IPv6 destinations for a...
Understand wildcard SSL certificate coverage
A wildcard such as *.example.com covers one label level and does not automatically cover the base...
Create and troubleshoot a CNAME record
A CNAME makes one hostname an alias of another hostname; it must not be confused with a URL...
Create and troubleshoot MX records
MX records route inbound email for a domain to mail-server hostnames in priority order.Applies...
Create and troubleshoot TXT records
TXT records commonly publish service verification and email-authentication values and must be...
Keep a change and rollback record for production services
A short change record makes DNS, website, email and server incidents easier to reverse and...
Create SRV and CAA records
SRV records publish a service location and port, while CAA records restrict which certificate...
Use different providers for website and email hosting
Website and email can remain with different providers when A, CNAME and MX records are planned...
Diagnose NXDOMAIN and SERVFAIL DNS errors
NXDOMAIN usually means the requested name does not exist; SERVFAIL means a resolver could not...
Check DNS with dig, nslookup and public resolvers
Use DNS tools to distinguish authoritative data from cached answers and to record evidence for...
