Delivery has failed to these recipients or groups:firstname.lastname@example.org
This message was rejected by the recipient e-mail system. Please check the recipient's e-mail address and try resending this message, or contact the recipient directly.
Diagnostic information for administrators:
Generating server: gov.ab.ca
#554 5.1.0 Sender denied ##
|The response from the remote server was:|
550 Sender email address rejected