Locked Mail

is there someone who can work around this? LOG: MAIN cwd=/usr/local/cpanel/whostmgr/docroot 4 args: /usr/sbin/exim -v -M 1nUmNd-0003SC-D3 delivering 1nUmNd-0003SC-D3 LOG: skip_delivery MAIN Spool file for 1nUmNd-0003SC-D3 is locked (another process is handling this message)
I've browsed all the threads on this forum, I've tried everything, nothing works. Help me, I really need help. If your help is successful, I am very grateful and may you be protected wherever you are.