DNS TXT Builder

SPF Record Wizard

Build a publish-ready SPF TXT record from your domain, current DNS, trusted senders, and policy preference.

Generated Output

Record Value

Domain Context

Domain Name

Current MX Handlers

(enter a domain to look up)

Do the MX handlers also originate email?

Current IP Address

(enter a domain to look up)

Does this host also send mail?

Authorized Senders

IPv4 netblocks that originate or relay mail Space-separated CIDR values. Use /32 for a single IP, e.g. 192.168.1.14/32.

Other hosts that can send or relay mail Space-separated hostnames.

Remote SPF records to include Space-separated hostnames, without the include: prefix.

Policy for non-matching senders