If the mail server is down or Service Desk is unable to connect to the email server to process email notifications, unsent emails are stored in %NX_ROOT%\site\mail_queue folder. These emails may not be processed once email server is up and running.
To resolve the issue, perform the following steps:
pdm_mail -c PROCESS_QUEUE
pdm_mail_nxd 2784 ERROR hunny_mail_intf 1549 ThrdLogger Sess:6:1:0 Unable to connect to mail servers (mailhost mail localhost). Last message: Can't connect to server at localhost Error (6) Connection refused.
"pdm_d_refresh"to reset the restart counter back to 0.