Nameserver changes can typically take 0 to 24 hours to take effect, but they are known to take as long as 48 hours to go into full effect.
DNS zone record changes such as A, MX, and CNAME records can typically take 0 to 4 hours to resolve but are known to take as long as 8 hours to fully propagate.
How long does TXT record take to update?
TXT record changes can take up to 72 hours to go into effect, but it usually happens much sooner. Need help or want to verify your change?
How do you update SPF records?
How To Update TXT/SPF Records
- Log in to your Domain Control Panel.
- Go to Domain Central.
- Click DNS.
- From Modify, select TXT/SPF Records.
- Type the TXT/SPF Record into the Content textbox.
- To modify a setting, select Edit or Remove from the Action dropdown menu next to the A Record.
How do I check my SPF record?
You can manually check the Sender Policy Framework (SPF) record for a domain by using nslookup as follows:
- Open Command prompt (Start > Run > cmd)
- Type “nslookup -type=txt” a space, and then the domain/host name.
- If an SPF record exists, the result would be similar to:
How many SPF records can I have?
Per the RFC, SPF records have a 255-character limit for a single string. This is an inherent limit of DNS TXT records.