Why Sendmail service failing to start in RHEL 7?
Issue
- Sendmail service does not start.
- Service sendmail fails to create socket.
- Sendmail service status shows problem in creating SMTP socket.
mail]# systemctl status sendmail
● sendmail.service - Sendmail Mail Transport Agent
Loaded: loaded (/usr/lib/systemd/system/sendmail.service; enabled; vendor preset: disabled)
Active: active (running) since Wed 2015-12-30 17:34:59 EST; 4s ago
ExecStart=/usr/sbin/sendmail -bd $SENDMAIL_OPTS $SENDMAIL_OPTARG (code=exited, statu s=0/SUCCESS)
ExecStartPre=/etc/mail/make aliases (code=exited, status=0/SUCCESS)
ExecStartPre=/etc/mail/make (code=exited, status=0/SUCCESS)
Main PID: 47008 (sendmail)
CGroup: /system.slice/sendmail.service
└─47008 /usr/sbin/sendmail -bd -q1h
systemd[1]: Starting Sendmail Mail Transport Agent...
sendmail[47008]: starting daemon (8.14.7): SMTP+queuei...00
systemd[1]: PID file /run/sendmail.pid not readable (y...t.
sendmail[47008]: NOQUEUE: SYSERR(root): opendaemonsock...se
sendmail[47008]: daemon MTA: problem creating SMTP socket
systemd[1]: Started Sendmail Mail Transport Agent.
Hint: Some lines were ellipsized, use -l to show in full.
Environment
- Red Hat Enterprise Linux 7
- Sendmail
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