I have an issue with my mail server that I cannot seem to resolve. We are running Plesk 9.3 on a windows server (2008 R2) and the issue appears to be with the MailEnable MTA as restarting this fixes the problem. Normally around once a day emails just stop working and we fail to receive any new emails sent through to us until it is restarted. Recently the issue seems to have worsened and it is now happening multiple times a day.
Looking through logs on the Event Viewer seems to show multiple logs containing the following at similar times to the problem:
MailEnable SMTP Service error: 288 ME-I0145: Service Stopped
I cannot seem to find an explanation for this error code. I have looked through the SMTP and MTA logs for MailEnable but they do not seem to show anything other than that the service was restarted.
Has anyone seen anything like this before?
Thanks for any help.