email no longer forwarding

For several years, my @Comcast.net email address has been auto-forwarding to a @me.com account. Over the last few days, emails sent to my @comcast.net address have gotten mail delivery failed messages, account closed please remove. Was there a sudden purge of the Comcast email service from non-Xfinity customers?  As you can imagine, most every effort to update an email address first requires a confirmation email to the address on file, which I no longer have access to. Please help!