I have three servers
Exchange - server 2012 running exchange 2013
AD - Server 2012 R2
App - Server 2012 R2
They are all on one box and I access them either through remote desktop or using Vsphere.
For the last month at least once a week our exchange server loses connection and mail flow stops, a simple restart and everything is fine and mail starts flowing again, however a week later same issue, never the same time though it varies.
I have run trend, malware bytes and norton eraser on all three and found nothing.
I have them all up to date with windows updates.
I can't figure out why it loses connection and a restart and it is fine again.