Free sms gateways software for windows

Microsoft Antigen server security products help businesses protect their e-mail and collaboration servers from viruses, worms, spam, and inappropriate content.
Many of todays viruses and worms are designed by criminal hackers to rapidly infect millions of computer systems across the world through the Web and e-mail. In addition to e-mail threats, an evolving ecosystem of viruses, worms, and blended threats are finding new ways to propagate inside corporate networks--including via portals and instant messaging applications. As a result, messaging and collaboration infrastructure is a critical focal point for businesses in the fight against malicious software.
Antigen server security products provide comprehensive protection for e-mail and collaboration environments with:
? Advanced Protection: Multiple scan engines at multiple layers throughout the e-mail infrastructure provide improved protection against e-mail threats.
? Availability and Control: Tight integration with Microsoft Exchange and Windows-based SMTP servers maximizes availability and management control.
? Secure Content: Helps organizations eliminate inappropriate language and dangerous attachments from internal and external communications.
To prevent infection and improve spam detection, Antigen e-mail security products combine the strengths of multiple, industry-leading technologies to uncover the latest e-mail threats and spammer tactics. The Antigen email server security products provide complete server-level protection and will help you easily protect your email infrastructure at multiple points in the network to prevent productivity loss and downtime.
Microsoft Antigen for SMTP Gateways, which helps protect e-mail infrastructure against infection and downtime at the network perimeter, stopping the latest e-mail threats before they ever reach users.
As of December 2006, customers who purchase Microsoft Forefront Security for Exchange Server to protect Microsoft Exchange Server 2007 will also be licensed to use Antigen for Exchange, Antigen for SMTP Gateways, and Antigen Spam Manager to protect their Exchange Server 2000 and Exchange Server 2003 environments.
System requirements:
Processor
? PC with a 166-MHz or higher Intel processor
Operating System
? Microsoft Windows Server 2003 (Standard or Enterprise Edition), Windows 2000 Server or Advanced Server with Service Pack 4 or later, or ISA Server 2004 -- supports SMTP clusters, including Windows 2000 active/active cluster
Memory
? 512 MB of available memory or more is recommended
Hard Disk
? 100 MB of available disk space
Additional Requirements
? Internet Information Services (IIS) 5.0 with SMTP Services must be installed
Version restrictions:
? 30 days trial