Content-Type: multipart/report; report-type=delivery-status; boundary=NNNNNNNNNN-eximdsn-MMMMMMMMMM
MIME-Version: 1.0
Subject: Mail delivery failed: returning message to sender
Content-Type: multipart/report; report-type=delivery-status; boundary=NNNNNNNNNN-eximdsn-MMMMMMMMMM
MIME-Version: 1.0
Subject: Mail delivery failed: returning message to sender