When sending attachments, files are becoming corrupt intermittantly. It may take 5 tries or 1 to send a good file. I have replaced the switch and router twice. I’ve sent thru both godaddy and hotmail. Brighthouse has verified that the connection and modem is good. I’ve run a ping -t and have not seen any packet loss. It all started when electric went out in the building, I have ups’s on all equipment so no damage was done. I even tried using a laptop that was not connected during the outage. Any suggestions?