Is there any way I can delete a whole email without passing it on to it's intended recipient based on whether or not it contains a txt file. I get several emails a day from users saying that the received a strange email containing ATT00000.txt. These files are coming from the firewall saying that the original attachment was deleted due to unsafe content. I somehow want to delete the whole email if it contains one of these files without delivering. I'm using Exchange 5.5 and Norton Antivirus Enterprise Edition version 8.0. Will be upgrading to Exchange 2003 in the near future if that helps any.