MapiExceptionTooComplex

As I am working toward decommissioning Exchange 2010, someone who has a mailbox in Exchange Online (EXO) was having an issue with staying connected to an on premises shared mailbox using Outlook. I proposed moving it to EXO to address the issue. While onboarding the mailbox to EXO, the move gave me an error that…

Exchange 2010 Default Receive Connector Settings

“Client SERVERNAME” Receive Connector Properties General… FQDN will be the FQDN of the internal name of the server Network… Authentication… Permission Groups… “Default SERVERNAME” Receive Connector Properties General… FQDN will be the FQDN of the internal name of the server Network… Authentication… Permission Groups… For internal mail flow, we need to select “Anonymous users”