Hello,

Thank you for your suggestion to implement DMARC forwarding. Messages automatically forwarded to users on external domains should be able to pass DMARC as long as your SPF record allows the server doing the forwarding to send email for your domain and you have the option enabled for “Use local address in SMTP envelope when forwarding messages”, which is found under Security / Security Settings / Sender Authentication / SPF Verification. If the message has been DKIM signed, it should also pass after forwarding unless something was altered in the message to break the signature.

If you’d like further assistance with this issue, please contact our support team directly. All of our support options can be found at http://www.altn.com/support.

Thanks,
Arron