SPF Validator

Use this SPF lookup tool to verify whether your sending domain's SPF record is correctly configured to send emails using the mySMTP infrastructure

Domain SPF Verification

Current SPF Record

⚠️ Warning:

mySMTP Integration Required

Your SPF record needs to include mySMTP servers to ensure proper email delivery. Select your IP type and click below to automatically merge the required mySMTP SPF string.

I have a Shared mySMTP IP I have a Dedicated mySMTP IP

Updated SPF Record

Next Step: Update your domain's DNS record with the SPF record above to complete the integration. If you have an existing SPF, replace it with the one above, if not, it should be created as a new TXT entry.

SPF Traversal Log

RFC 7208 limits SPF to 10 DNS lookups. What counts:

▸ include: → 1 lookup (then recursively processes included record)
▸ redirect= → 1 lookup (replaces current SPF with redirected record)
▸ mx or mx:domain → 1 lookup (regardless of IPs resolved)
▸ a or a:domain → 1 lookup
▸ ptr or ptr:domain → 1 lookup (deprecated)
▸ exists:domain → 1 lookup
▸ ip4: and ip6: → 0 lookups (literal IPs)

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