CentOS - Jan 2016 - SELinux context change on /etc/posfix/main.cf

This morning I received this report of a change to the SELinux context
of /etc/posfix/main.cf on one of our hosts.

from:

system_u:object_r:postfix_etc_t:s0

to:

unconfined_u:object_r:postfix_etc_t:s0

The contents of the file have been verified as unchanged.  There was a
yum update applied yesterday to this host and this may be an intended
alteration.  However, can anyone confirm this for me?  Or, otherwise
explain what has happened?



-- 
***          e-Mail is NOT a SECURE channel          ***
        Do NOT transmit sensitive data via e-Mail
James B. Byrne                mailto:ByrneJB at Harte-Lyne.ca
Harte & Lyne Limited          http://www.harte-lyne.ca
9 Brockley Drive              vox: +1 905 561 1241
Hamilton, Ontario             fax: +1 905 561 0757
Canada  L8E 3C3