Happy Fox

This outbound email provider does not allow a custom Return-Path address to be set. 

This outbound email provider does not support DKIM signing.

DKIM Setup via CNAME

This specific email provider relies on a CNAME record (or multiple records) for DKIM set up. Below is an example a typical  CNAME Record for setting up DKIM. The HOST section will typically contain a unique name followed by the domain name you are creating the record for (In the below "s1.domainkey" is the unique name followed by the domain of "yourdomain.com". The ADDRESS section will outline where mail receivers should look for a DKIM record for the domain. Both of these values are typically auto generated when you setup DKIM via an outbound email source.

No Custom DKIM records

This outbound email provider does not allow for any modification to the DKIM records they have provided to you.