Besides backup, any IT division should have a disaster recovery plan. You will find a few tips below relating to the development of such a plan and to what issues one should pay special attention in the course of backup planning.
|Existing Office 365 implement on-premise AD||4||42|
|SPF record issue||6||33|
|Powershell send smtp emaiil to server with CNAME alias||2||15|
|Upgrade Exchange 2013 to Exchange 2016||8||42|