This file is indexed.

/etc/courier/dsnheader.txt is in courier-mta 0.76.3-5+deb9u1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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Content-Type: text/plain; charset=us-ascii


This is a delivery status notification from [#ME#],
running the Courier mail server, version 0.76.3.

The original message was received on [#FROMTIME#]
from [#FROMMTA#]