You can try searching the Message Audit Logs using the following Filter parameters:
Recipient
. (enter a period or dot for this field)
Verdict
The message is unscannable
As of your other question, you can hover the mouse over the entry to view the entire contents of that field. The limitation of displaying the longer content with "..." is to accomodate variable length content as some content may not even fit a 24" screen.
Regards,
Adnan