Email Source: DuoCircle

Homepage: https://www.duocircle.com/

This source is known to forward email

Capable of generating DMARC compliant email for others

Yes

DuoCircle supports full DMARC compliance.

Capable of signing email with DKIM for others

Yes

For DKIM setup, contact DuoCircle support or visit: https://support.duocircle.com/support/solutions/articles/5000716920-validate-spf-and-dkim-records

Capable of sending SPF compliant email for others

Yes

Add 'include:outbound.mailhop.org' to your SPF record. More information on DuoCircle's SPF setup is available on: https://support.duocircle.com/support/solutions/articles/5000519471-how-do-i-use-spf-