From the OPMS Monit Summary we found below
>sudo monit summary
Monit 5.26.0 uptime: 94d 3h 6m
Monit 5.26.0 uptime: 94d 3h 6m
Service Name Status Type
cl0a2398 OK System
Xvfb OK Process
webdriver-agent OK Process
tunnel-client OK Process
api OK Process
httpbroker OK Process
assetsmanager OK Process
resultbroker OK Process
fpm OK Process
redis-server OK Process
rbtm1-Xvfb OK Process
rbtm2-Xvfb OK Process
rbtm3-Xvfb OK Process
rbtm4-Xvfb OK Process
rbtm5-Xvfb OK Process
rbtm6-Xvfb OK Process
php-fpm OK Process
nginx OK Process
fcgiwrap OK Process
exim4 Execution failed | Does... Process
docker OK Process
bm_proxy OK Process
devshmfs_warning OK Filesystem
devshmfs_critical OK Filesystem
homefs_warning OK Filesystem
homefs_critical OK Filesystem
optfs_warning OK Filesystem
optfs_critical OK Filesystem
rootfs_warning OK Filesystem
rootfs_critical OK Filesystem
tmpfs_warning OK Filesystem
tmpfs_critical OK Filesystem
varfs_warning OK Filesystem
varfs_critical OK Filesystem
selenoid-docker OK Program
rbtm1 OK Program
rbtm2 OK Program
rbtm3 OK Program
rbtm4 OK Program
rbtm5 OK Program
rbtm6 OK Program
jmeter4-agent OK Program
jmeter2-agent OK Program
fpm-agent OK Program
bm_proxy_open_fd OK Program
opms 2021.11-rhel_7
Exim is a message transfer agent (MTA) for use on Unix systems connected to the Internet. It is used only if customer selects the OPMS status to be sent via email. It sends these message.
If exim is failing on the station it is not a big problem. Exim is used only to notify users about OPMS problems and only if you checked this option during installation which is by default disabled and most customers keep the default value. You can safely ignore it unless you really need the problem notifications .
In case you are Monitoring OPMS services and failing of any process generate alert, then it's safe to delete exim from the monit config. If you have no OPMS email notifications set up,you don't really need exim anyway.
How to delete:
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The files will be in /etc/monit.d/ . you have to execute monit reload after they make any changes/delete the exim4 monit definition file.
Upgrade OPMS
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Also upgrade to latest version: currently OPMS 2023.10.4.