Getting mail from watchdog about service down.
# tail -f /var/log/wdcollect.log
3600 Jan 29 14:24:25 [notice] Connection to server has been established.
3600 Jan 29 14:25:34 [info] Connection to SMTP server has been closed.
3600 Jan 29 14:29:29 [notice] Connection to server has been established.
Please note that
wdcollect is related to
Watchdog module. Watchdog is a module for monitoring Plesk control panel services. When watchdog fails to get a status update from any of the services monitored by it, it assumes that the process is not working and run a restart command for the process. Then it sends a mail to the email address configured. This problem usually occurs due to the connection timeout value set for the service.
Review timeout values for the particular affected service via Plesk > Extensions > Watchdog