tried this https://forum.aapanel.com/d/477-why-opendkim-going-to-be-off
bu still same opendkim is not starting
[root@server ]# rpm -qa|grep opendkim
[root@server ]# systemctl restart opendkim
Failed to restart opendkim.service: Unit not found.
do you have any think for that?
What is the Linux distribution you are using? Let's test it
Centos 7 using and the DKIM is removing from system and then i installed again yum install opendkim and its working now but the question is Why removed?