/usr/share/lintian/overrides/exim4-config is in exim4-config 4.84.2-2+deb8u5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 | exim4-config: non-standard-file-perm etc/exim4/passwd.client 0640 != 0644
|