/etc/apparmor.d/program-chunks/postfix-common is in apparmor-profiles 2.8.95~2430-0ubuntu5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | # ------------------------------------------------------------------
#
# Copyright (C) 2002-2005 Novell/SUSE
#
# This program is free software; you can redistribute it and/or
# modify it under the terms of version 2 of the GNU General Public
# License published by the Free Software Foundation.
#
# ------------------------------------------------------------------
# used with postfix/*
capability setuid,
capability setgid,
capability sys_chroot,
/etc/postfix/*.cf r,
/etc/postfix/*.db r,
@{PROC}/net/if_inet6 r,
/usr/lib/postfix/*.so mr,
/usr/lib64/sasl2/* mr,
/usr/lib64/sasl2/ r,
/usr/lib/sasl2/* mr,
/usr/lib/sasl2/ r,
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