GFI MailEssentials for Exchange/SMTPScreenshot
GFI MailEssentials is a server based anti-spam and anti-phishing solution for Exchange/SMTP/Lotus, which also includes freeware features. With GFI MailEssentials you can add disclaimers to the top or bottom of emails at server level for FREE. This solution uses multiple anti-spam filtering techniques to capture 99% of spam, whilst minimizing false positives. Spam is caught before reaching the mail server, eliminating the need for client software!