Ha ha, I just went in to create the filter to delete it, and I noticed that there was a filter already there for Tripwire Clear. Looks like that is why I didn't get these emails before, and now Dahua changed the emails sent from Tripwire Clear to Tripwire End, and that is why the emails were slipping through... lol
Thank you all for your help. I guess I should have tried creating a filter earlier, and I would have seen the issue sooner... lol
Mike