/usr/share/lintian/overrides/sendmail-cf is in sendmail-cf 8.15.2-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | # These are config file snippets.
extra-license-file usr/share/sendmail/cf/ostype/bsd4.3.m4
extra-license-file usr/share/sendmail/cf/ostype/bsd4.4.m4
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