I did a Mail Flow Message Trace to a Distribution List. On the Message Trace Results Status column, the Status delivery shows "Expanded." Then to find out what that meant, I double clicked the grid and gave me the events and the action details:
First Event was "Expand" - Action Detail: The message was sent to a distribution list (DL) that was expanded to the recipients of the DL.
Second Event was "Spam Diagnostics"
Third Event was "DROP" - Action Details:Reason: [{LRT=};{LED=250 2.1.5 RESOLVER.GRP.Expanded; distribution list expanded};{FQDN=};{IP=}]
My question is what is "DROP" means? Did the email got delivered to the DL intended recipients or it didn't?