DKIM not need to start

I Have a Problem with openDKIM he does not need to start
reinstall it and not working
rebuild email serves on CWP and restarts service still not working
edit Socket  inet:8891@localhost to  inet:8891@127.0.0.1 still not working
this is an error message

ExecStart=/usr/sbin/opendkim $OPTIONS (code=exited, status=65)
opendkim[16594]: no such group or gid 'opendkim'
opendkim[16594]: opendkim: no such group 'opendkim'
systemd[1]: opendkim.service: control process exited, code=exited status=65
systemd[1]: Failed to start DomainKeys Identified Mail (DKIM) Milter.
systemd[1]: Unit opendkim.service entered failed state.
systemd[1]: opendkim.service failed.

How To fix this problem

try reinstalling dkim
yum reinstall opendkim libopendkim

the problem still not fixed
Jul 10 09:13:30 small systemd[1]: Unit opendkim.service entered failed state.
Jul 10 09:13:30 small systemd[1]: opendkim.service failed.
Jul 10 09:13:43 small systemd[1]: Failed to reset devices.list on /system.slice/opendkim.service: Operation not permitted
Jul 10 09:13:43 small systemd[1]: Starting DomainKeys Identified Mail (DKIM) Milter...
-- Subject: Unit opendkim.service has begun start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit opendkim.service has begun starting up.
Jul 10 09:13:43 small opendkim[7822]: /etc/opendkim/keys/default.private: open(): No such file or directory
Jul 10 09:13:43 small opendkim[7822]: opendkim: /etc/opendkim.conf: /etc/opendkim/keys/default.private: open(): No such file or directory
Jul 10 09:13:43 small systemd[1]: opendkim.service: control process exited, code=exited status=78
Jul 10 09:13:43 small systemd[1]: Failed to start DomainKeys Identified Mail (DKIM) Milter.
-- Subject: Unit opendkim.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit opendkim.service has failed.
--
-- The result is failed.
Jul 10 09:13:43 small systemd[1]: Unit opendkim.service entered failed state.
Jul 10 09:13:43 small systemd[1]: opendkim.service failed.

Trying to use dkim keys with my Linode DNS server.   I created a txt record with linode dns server using my public key.  Now I want to use my private key with centos cwp.  Is there a tutorial for setting up dkim to work with external dns servers?

dkim key's you can add by using admin panel dkim manager

dkim key's you can add by using admin panel dkim manager

Im sure your explanation will be extremely heplful to others trying to wrestle with this issue.

Anyone who needs help with this can message me directly.

Can someone help me to solve this?
I don't know why some are invalid others fail and other domains are correct.

Im having the same problem as bytecanarias.

Tried rebuilding email server and restarting OpenDKIM.

Any idea whats going on here?

I've stopped testing, I'm waiting to see if anyone has any ideas.

Did any one find a resolution for this issue

I've stopped testing, I'm waiting to see if anyone has any ideas.

Make sue your OpenDKIM service is running (Green Active), and that you have DKIM Enable in your mailserver build.

It would be safe to rebuild your Mailserver to confirm.

Iam also facing the same issue, many of my hosted domain names are showing this issue , Most email send to gmail are also blocked

Can someone help me to solve this?
I don't know why some are invalid others fail and other domains are correct.

You must have DMARC, DKIM, and SPF records in place to interact with Gmail. Also start looking into ARC, because it will be the next thing to support down the road...