I have had luck with isos as well because motw publisher check isn't done for exe's in them. But unless you have an encrypted zip, our email security will catch

I have had luck with isos as well because motw publisher check isn't done for exe's in them. But unless you have an encrypted zip, our email security will catch it before/after delivery and quarantine it after detonating the iso and its contents. I even tried stuffing the iso with very large files to hit some sort of a limit in automated analysis.