This document will provide the steps necessary to set up custom domain authentication for SendGrid, approving SendGrid to send DMARC-compliant email from addresses in your organization's subdomain (e.g. mydomain.wisc.edu).
Information about the protection of UW-Madison email with DMARC can be found here: Email Authenticity
Note: approving a third-party email vendor to send email as/from @wisc.edu addresses (e.g. firstname.lastname@example.org) is not permitted. Only approve third-party email vendors to send email as/from addresses in your subdomain (e.g. email@example.com).
SendGrid provides publicly available documentation on setting up custom domain authentication:
If you need assistance in taking the above steps, please contact the DoIT Help Desk.