Does EV archive/reject multiple journal messages with same MessageID?

Hello,

This was partially answered in some of the other posts, but it isn't very clear to me.  I get confused about duplicate archiving and SIS.  Getting to the question, does the second message to the same Journal mailbox with the exact same MessageID that was archived earlier (i.e., same message metadata/header/content etc.,) get archived or rejected by EV saying that it already archived this message?

We are on EV 10.0.1.

Thanks!