I installed sendmail on CentOS based on some tutorial. When I start sendmail, it showing sendmail failed error.
Here the following command result:
systemctl status sendmail
sendmail.service - Sendmail Mail Transport Agent
Loaded: loaded (/usr/lib/systemd/system/sendmail.service; enabled)
Active: failed (Result: exit-code) since Sun 2015-08-23 10:57:25 EDT; 12min ago
Aug 23 10:57:25 test systemd[1]: Starting Sendmail Mail Transport Agent...
Aug 23 10:57:25 test systemd[1]: sendmail.service: control process exited, code=exited status=203
Aug 23 10:57:25 test systemd[1]: Failed to start Sendmail Mail Transport Agent.
Aug 23 10:57:25 test systemd[1]: Unit sendmail.service entered failed state.