SPF checks can be specified using the below options. Most options can be inherited or explicitly set to yes or no.

CheckSPF Configuration


Enable SPF checks.

Reject Failed SPF

Reject SPF checks which come back as "fail".

Add SPF Header

If the mail is not rejected, add an SPF header.

Server Configuration

Configuration for this module is done in the [CheckSPF] section in the configuration file.


Set to 1 if you wish to enable this module. Default 0 (disabled).

Complete Example

Taking the policies described in the other feature document, we add SPF checks to all inbound email...

Check SPF on Inbound

Policy: Default Inbound Policy
UseSPF: Yes
RejectFailedSPF: Yes
AddSPFHeader: Yes