DMARC errors when sending email to comcast.net addresses

We are getting the message copied below the "***" line in this email for the comcast.net email address of a member. Is there anything that we can do about this on the FreeToastHost side, or anything that the support and development team can do?

I saw a post about a different message last year related to outgoing emails from FreeToastHost. It received the reply, "it is because of the new DKIM and Dmarc rules. email that is forwarded sometimes breaks, depending on the receiving email service", but the reply didn't include any suggestions for resolving the problem.

Thanks in advance for any information you can share.

*** ERROR MESSAGE FROM COMCAST ***

Emails sent to the email address [ xxx@comcast.net ] have bounced too many times and exceeded the FreeToastHost limit for returned emails.  The error information for the last bounced email is as follows:

Your email message to xxx@comcast.net could not be delivered
and was returned to the FreeToastHost server. Details are as follows:

    Recipient Email Address: xxx@comcast.net
    Email Subject: xxx Toastmasters 08/14/2025 Meeting Notification: Role Change
    Date Sent: Sun, 27 Jul 2025 14:13:26 +0000

    Diagnostic Code: 550 5.2.0 g280uYiI9nu6eg280uuLkq Message rejected due to DMARC. Please see postmaster.comcast.net/smtp-error-codes.php#DM000001
    Delivery Status: 5.2.0 filtered

I am looking into this issue

I am seeing the same problem for e-mails to garmin.com

This should be fixed. Please let us know if it is still occurring.