This is the full log

opendkim.service - DomainKeys Identified Mail (DKIM) Milter
Loaded: loaded (/usr/lib/systemd/system/opendkim.service; enabled; vendor preset: disabled)
Active: active (running) since Sun 2017-01-08 00:06:41 UTC; 13h ago
Docs: man:opendkim(8)
man:opendkim.conf(5)
man:opendkim-genkey(8)
man:opendkim-genzone(8)
man:opendkim-testadsp(8)
man:opendkim-testkey
http://www.opendkim.org/docs.html
Main PID: 2648 (opendkim)
CGroup: /system.slice/opendkim.service
└─2648 /usr/sbin/opendkim -x /etc/opendkim.conf -P /var/run/opendkim/opendkim.pid

Jan 08 01:45:43 zpanel.sisd-azhar.com opendkim[2648]: A7E694197F: DKIM verification successful
Jan 08 02:02:48 zpanel.sisd-azhar.com opendkim[2648]: DDEA541981: bay004-omc1s10.hotmail.com [65.54.190.21] not internal
Jan 08 02:02:48 zpanel.sisd-azhar.com opendkim[2648]: DDEA541981: not authenticated
Jan 08 02:02:48 zpanel.sisd-azhar.com opendkim[2648]: DDEA541981: failed to parse authentication-results: header field
Jan 08 02:02:48 zpanel.sisd-azhar.com opendkim[2648]: DDEA541981: DKIM verification successful
Jan 08 02:14:06 zpanel.sisd-azhar.com opendkim[2648]: default.dkim.sisd-azhar.com: key data is not secure: /etc/opendkim/keys/sisd-azhar.com/default.private is in group 12 which has multiple users (e.g. “mail”)
Jan 08 02:14:06 zpanel.sisd-azhar.com opendkim[2648]: 367E54197E: error loading key ‘default.dkim.sisd-azhar.com’
Jan 08 05:30:30 zpanel.sisd-azhar.com opendkim[2648]: E9B2541974: o1.support.paptap-apps.com [167.89.92.139] not internal
Jan 08 05:30:30 zpanel.sisd-azhar.com opendkim[2648]: E9B2541974: not authenticated
Jan 08 05:30:30 zpanel.sisd-azhar.com opendkim[2648]: E9B2541974: DKIM verification successful