・現状確認

[root@alma]# ls -al /etc/opendkim/keys/papa-net.com/

-rw------- 1 root root 900 Apr 1 12:34 20250401.private
-rw------- 1 root root 500 Apr 1 12:34 20250401.txt

・所有権とアクセス権を opendkim に変更

[root@alma]# chown -R opendkim:opendkim /etc/opendkim/keys/papa-net.com/

・変更確認

[root@alma]# ls -al /etc/opendkim/keys/papa-net.com/

-rw------- 1 opendkim opendkim 900 Apr 1 12:34 20250401.private
-rw------- 1 opendkim opendkim 500 Apr 1 12:34 20250401.txt