You need an affordable email security with a powerful spam filter that serves as a Microsoft Exchange firewall or SMTP firewall?
SecurityGateway email spam firewall for Exchange/SMTP Servers is what we really recommend you! It  protects against viruses, phishing, spoofing, and other forms of mal ware that present an ongoing threat to the legitimate email communications of your business.  SecurityGateway analyzes, manages, and reports on the inbound and outbound email traffic patterns of Microsoft Exchange Server or any SMTP mail server effectively and quickly.

Major Features:

1. Simple Administration -- Intuitive, task oriented interface allows already overworked administrators to perform common actions with least effort.
2. Comprehensive Reporting -- Identify email traffic patterns and potential problems with SecurityGateway email spam firewall for Exchange/SMTP Servers comprehensive reporting.
3. Accurate Detection -- With multiple analysis tools for separating threats from legitimate email, SecurityGateway leverages the best proven anti-spam, anti-virus, anti-phishing, and anti-spoofing technologies to block successfully 99 percent spam
   
4. Data Loss Prevention -- In addition to inbound mail traffic filtering, SecurityGateway also filters outbound email. An easy-to-use interface allows policies to be created which detect and prevent the un-allowed transmission of sensitive information outside of your network.
5. Powerful Filtering Engine -- SecurityGateways powerful filtering engine is based upon the industry standard SIEVE mail filtering language. An administrator may extend its functionality by using their own SIEVE scripts.
6. Defense Layer Customization -- A unique control method that enables email administrators  to prioritize the order of operations a specific security rule will execute when analyzing incoming or outgoing mail traffic.

WareSeeker Editor