This source is known to forward email
Our data indicates MailChannels supports DMARC compliance via SPF and DKIM.
To configure DKIM, see: https://mailchannels.zendesk.com/hc/en-us/articles/212454026-cPanel-DKIM-Configuration-Guide
To configure SPF, add 'include:relay.mailchannels.net' to your SPF record. See this article for more information: https://mailchannels.zendesk.com/hc/en-us/articles/200262610-SPF-Records-Configuration-for-MailChannels-Cloud?mobile_site=true