This file is indexed.

/usr/share/doc/libmail-sendmail-perl/copyright is in libmail-sendmail-perl 0.79.16-1.

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

The actual contents of the file can be viewed below.

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This package was debianized by JaldharH. Vyas <jaldhar@debian.org>
Mon,  5 Jun 2000 11:26:00 -0500
from the original package found at CPAN, the only modification was the
addition of the /debian subdir.

The original package can be downloaded from:
    http://www.perl.org/CPAN/modules/by-module/Mail/

COPYRIGHT

© 2003 Milivoj Ivkovic mi@alma.ch or ivkovic@csi.com

You can use it freely. (Someone complained this is too vague. So, more
precisely: do whatever you want with it, but be warned that terrible
things will happen to you if you use it badly, like for sending spam,
claiming you wrote it alone, or ...?)