Does anyone know of a simple email filter that could be installed infront of an email server (Gateway) that I could use to filter out email to old email addresses that are no longer with the company.
The majority of my company's spam is for employees that haven't been here for years. I am using GFI mailsecurity and mailessentials for SPAM and Virus filtering but it doesn't have this capablility and the logs are way to large to use efficiently to look for false positives. I want to delete these 100% junk emails before they even get to my filtering software.
Thanks!
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