Email Authentication Tools
Generate SPF, DKIM, and DMARC records easily with this tool.
SPF
DKIM
DMARC
Domain:
Allowed Sending IPs
Enter IPv4/IPv6 or use ip4:/ip6:. Click “+ Add” to add more rows.
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+ Add
Domains To Include
Each valid domain becomes include:domain (e.g. _spf.google.com). Use “+ Add” to add more.
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+ Add
Include MX records
Include A records
Generate SPF Record
Domain:
DKIM Selector:
Key Size:
1024-bit RSA
2048-bit RSA
4096-bit RSA
Generate DKIM Keys & Record
Domain:
DMARC Policy:
none — monitor only (no blocking)
quarantine — send to spam
reject — block failing mail
Monitor only: collect reports but do not affect delivery.
DMARC Report Email (optional):
Use a dedicated mailbox for aggregate reports:
postmaster@example.com
Generate DMARC Record