Workfront supports DMARC compliance via SPF.
Compliance via DKIM couldn't be verified. For more information, contact Workfront support.
Add 'include:spf.workfront.com' to your SPF record. For more information contact Workfront support or visit: https://one.workfront.com/s/document-item?bundleId=the-new-workfront-experience&topicId=Content%2FAdministration_and_Setup%2FTips_Tricks_and_Troubleshooting%2Fprevent-spoofing-add-wf-spf-records.html&_LANG=enus