I have a customer who has tried to send an email message which happens to be too big for the mail transport to handle.
The send/recv timer has been set to 15 minutes, and to not send messages immediately.
The message cannot be deleted, even if Outlook is put into "Work Offline" mode.
When double clicking on the message, there is a message:
"! Cannot open this item. Outlook has already begun transmitting this message [OK]"
However, the task manager shows low network volume, indicating that this message is not being sent right now.
Thank you in advance for your help!