This file is indexed.

/etc/sks/procmail is in sks 1.1.4-2.1ubuntu1.

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

The actual contents of the file can be viewed below.

1
2
3
:0
* ^Subject: *(incremental|add)
| /usr/lib/sks/sks_add_mail /var/spool/sks