SPF Analysis

Analyze and validate SPF records for any domain
SPF Designer
Build your SPF record step by step with guided options
Basic Policy
Recommendation: Use Soft Fail (~all) for most domains. It provides protection while being forgiving of configuration issues.
Authorized Email Sources
Domains allowed to send emails for you. One per line. "a:" will be added automatically.
IPv4 addresses or CIDR ranges. One per line.
IPv6 addresses or CIDR ranges. One per line.
External SPF records to include. Common services: Google (_spf.google.com), Microsoft (spf.protection.outlook.com), Salesforce (_spf.salesforce.com). One per line.
Expert zone: These settings are for advanced users who understand SPF mechanisms. Most domains can skip this section.
Advanced DNS-based validation. Use only if you understand SPF macros.
Custom SPF mechanisms. Advanced users only.
SPF Record Editor
Enter or edit SPF record to validate its syntax
Parses the SPF text record and pre-fills the designer so you can fine-tune it visually.

SPF

SPF defines which servers may send emails for your domain. It helps prevent spoofing and improves deliverability.