Services don't work after upgrade
The GMS Mail services on my server are working spasmodically after an upgrade to the latest version.
If you were running any of the "mail -d" options in a command window when you upgraded, you may see spasmodic failure of the GMS Mail services, i.e. they will run for a short while and then stop working although there is nothing to indicate a failure in the logs.
If you find this to be the case please reboot your server, the problem should then clear itself.