No Spam Today! for Servers   
http://www.byteplant.com

No Spam Today! is an SMTP/POP3 proxy server based spam filter that sits between the internet and your mail server. Incoming mail is accepted from the Internet and checked for spam and viruses. NoSpamToday! uses the award-winning SpamAssassin engine to flag spam mail in the subject line and add a filtering report to spam mails according to your configuration. NoSpamToday! works with products of all vendors of mail client or server software, and also allows simple integration of third-party virus checkers. When installing No Spam Today! you will get: 1. A complete one stop setup routine that installs one of the world's most advanced and thorough spam filters on your server in a matter of minutes. 2. A reliable SMTP/POP3 proxy service software that makes it easy to integrate No Spam Today! into any existing email infrastructure 3. An easy to use Admin Wizard to configure all important settings of No Spam Today! and the SpamAssassin engine 4. Updates, e.g. when new versions of the SpamAssassin engine are released 5. An attachment blocker, and built-in support for third-party virus checkers 6. Free support (commercial licenses only) NoSpamToday! is available as freeware for personal and non-commercial use. Several commercial licenses are available, offering exceptional value at low prices.

Trilent Mail Proxy   
http://www.trilent.net

This firewall-friendly mail (SMTP/POP3) proxy enables small network users to access and distribute email via a single Internet connection, eliminating the need for dedicated mail servers. This is an application-level proxy. It enhances network security by enforcing mail protocol rules and offering many security promoting features, such as access control and event logging. Once configured, the proxy works unobtrusively in the background and requires minimal attention. It offers "install-and-forget" operation. The proxy is designed with reliability in mind. Its modular, multi-threaded design and implementation as a Windows service contributes to its superior stability (it carries the "Designed for Windows" logo.) The proxy supports up to 30 concurrent mail connections, offers extensive compliance with Internet standards and includes a simple mail monitor, capable of monitoring mail connections. Note: To run the program you need a free trial registration key from publisher's Website.

Mail Access Monitor for PostFix   
http://www.InternetAccessMonitor.com

It is hard to imagine an office without access to e-mail. Just as hard as finding a large company that does not have irresponsible employees who prefer exchanging e-mail messages with their friends rather than doing their job. If you are a manager, business owner or IT specialist, you have to know that there is a simple, quick and inexpensive way to take control of corporate e-mail system. Mail Access Monitor is a simple tool that analyses mail server logs and shows how much traffic is being used by e-mail, who sends and receives most messages, where the messages are being send to and if e-mail abuse takes place in your office. The program works with all popular e-mail servers (MDaemon, Kerio MailServer, Merak Mail Server, MS Exchange Server, VisNetic MailServer, SendMail, PostFix, CommuniGate Pro and QMail) and builds charts that are easy to comprehend. A simple glance at the chart reveals a lot of information. For example, you may find out that most outgoing e-mail messages are not related to work in any way and cost you hundreds of dollars in extra traffic a year. Or that some employees average 30-50 emails a day. Or, on the other hand, some of your sales staff members who are supposed to be proactive at approaching clients only reply to incoming messages. The best part of Mail Access Monitor is that it starts working right after installation (which takes less then 1 minute) and frees you from having to look over employees shoulders. As soon as employees learn that their e-mail use is being tracked and that the abusers will be punished, their productivity increases drastically. In fact, Mail Access Monitor is so effective that some Fortune 500 companies made it a mandatory policy to have the program installed in every office and branch around the globe! To see how Mail Access Monitor can help your company fight e-mail abuse, download free trial version now!

No Spam Today! for Servers Freeware   
http://www.byteplant.com

No Spam Today! is an SMTP/POP3 proxy server based spam filter that sits between the internet and your mail server. Incoming mail is accepted from the Internet and checked for spam and viruses. NoSpamToday! uses the award-winning SpamAssassin engine to flag spam mail in the subject line and add a filtering report to spam mails according to your configuration. NoSpamToday! works with products of all vendors of mail client or server software, and also allows simple integration of third-party virus checkers. When installing No Spam Today! you will get: 1. A complete one stop setup routine that installs one of the world's most advanced and thorough spam filters on your server in a matter of minutes. 2. A reliable SMTP/POP3 proxy service software that makes it easy to integrate No Spam Today! into any existing email infrastructure 3. An easy to use Admin Wizard to configure all important settings of No Spam Today! and the SpamAssassin engine 4. Updates, e.g. when new versions of the SpamAssassin engine are released 5. An attachment blocker, and built-in support for third-party virus checkers 6. Free support (commercial licenses only) NoSpamToday! is available as freeware for personal and non-commercial use. Several commercial licenses are available, offering exceptional value at low prices.