A DNS record may fail to save or display error messages for various reasons. Here's how to troubleshoot common DNS record issues:

Saving DNS Records

When adding custom records, always:

• Replace the gray placeholder values in Host and Data fields with actual values
• Note that Priority field is optional except for MX and SRV records
• Remember your domain name is automatically added after Host values

Common Host Field Issues:

• For mail.yourdomain.com, only enter "mail" in the Host field
• Use @ in the Host field when provider requests bare domain (yourdomain.com)
• Avoid duplicate Host values across different record types

Error Messages and Solutions

Invalid IP Address or Host Name:

• Check Data field format
• Remove trailing periods
• Verify information is entered correctly

Conflicting Records:

1. Review existing DNS settings
2. Delete conflicting records
3. Add new custom records
4. Allow 24-72 hours for nameserver updates

AAAA Records:

• Use fully expanded IPv6 addresses
• Example:
  • Incorrect: 2620:12a:8000:3
  • Correct: 2620:12a:8000:0:0:0:0:3

"Enter Valid Alias Data" Error:

• Ensure record is under 255 characters
• Remove extra characters (especially trailing periods)
• Check for typos

Long TXT/DMARC Records:

• Split records longer than 255 characters into smaller strings
• Add each string separately as individual records
• Use online DNS record splitting tools if needed

Priority Field:

• Only editable for MX and SRV records
• Will appear but remain locked for other record types

Support Limitations:

• Support can help locate DNS settings
• Technical DNS advice should come from service providers
• Use Domains section of Squarespace Forum for peer assistance

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