Undeliverable Email, Can it be faked?

I had an email to a tenant that bounced back with the following:

“Failed to deliver to ‘username@tmail.com’
LOCAL module(account username@tmail.com) reports:
mail receiving disabled ”

(the rest of the details I left off but can give if necessary)

This is the only email to bounce back and I think due to the contents the recipient didn’t want to acknowledge reception. Can the user force this email to come back to me by doing something after having read the message?

If anyone knows of a way please let me know as this person has been very evasive and has proven quite crafty and knowledgeable.

Thanks

dbrumit