Enable SMTP Logging Exchange Server 2016

In this article I’ll show you how I enable SMTP Send or Receive Connector logging on Exchange Server 2016 using the Exchange Admin Center and PowerShell.

To use EAC -> Open EAC -> Mail Flow

Click Send Connector or Receive Connector

Double click connector and set the protocol logging to Enable

Next go to the location below to view the logs:

C:\Program Files\Microsoft\Exchange Server\V15\TransportRoles\Logs\Hub\ProtocolLog

To view the location off all Logs run the command below:

Get-TransportService -Identity EX16SERVER |fl

To use Exchange PowerShell to enable Protocol logging use:

Set-SendConnector “outbound to office 365” -ProtocolLoggingLevel verbose

To disable use:

Set-SendConnector “outbound to office 365” -ProtocolLoggingLevel none