Mistakenly Sent R-Rated Video Attachement From Work Account

From my home computer, I sent a buddy a raunchy movie clip I thought was funny. He told me he got it, but said it came from my work email and not my private one. I checked and he was right. Immediately, I erased it from "sent" and then permanently deleted it from "trash." My employer has zero reason to be manually looking into my emails and attachments. My fear is that they've got some kind of software program that automatically scans all attachments and sends a report of ones that were sent that are questionable. I know their software scans for viruses, but I'm concerned about a short, R-Rated video clip that was sent as an attachment. Any help would be greatly appreciated.