E-mail Server and Courier Mail Server Software for Windows

IDN Conversion Tool
$0 - JH Software ApS

Convert International Domain Names (IDN) into punycode and back.
Enter a domain name native language characters and get the encoded form to use in your server software such as DNS server, web-servers, and e-mail servers.
Or enter an encoded domain name (cotains "xn--") and see the domain name in native language characters.

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PostCast Server Professional
$49 - Gate Comm Software

PostCast Server is an SMTP server program for Windows that enables you to send messages directly from your computer. This program is used for sending newsletters, distributing messages to different mailing lists, sending notifications to your customers, as well as for sending individual messages. You can use it instead of the SMTP server of your Internet Service Provider (ISP). PostCast Server supports all e-mail programs. The program you already use for sending and receiving messages can be connected to the server in a very easy way - by altering just one parameter. Having done so, you can send messages in a usual manner. Once the program has been set, it performs all its tasks in the background. You can set the program to send messages on a daily basis, every hour, immediately after downloading them, or in some other time interval. If necessary, the program will automatically call your ISP and terminate the connection after completing its task. You can connect to it via LAN, Internet or directly from the computer where it has been installed. The program can be configured to send messages for all users within LAN. If necessary, it is possible to limit access to the program using several security options. It has been optimized for very fast message delivery and gets the most out of your Internet connection. While sending messages, the program establishes dozens of connections at the same time. Thus, it reaches maximum speeds and on average delivers about 3,500 messages per hour with an ordinary modem Internet connection and some 13,000 with an ISDN connection. The sending speed increases with the capacity of your Internet connection.

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Proxy Workbench
$150 - tcpIQ / Sigma Solutions

Proxy Workbench is a unique proxy server ideal for developers, trainers and security experts that displays its data in real-time. You can actually see the data flowing between your e-mail client and the e-mail server, web browser and web server or even analyse FTP in both Passive and Active modes. In addition, the 'pass through' protocol handler enables analysis of protocols where the server does not readily change.

The best feature is the animated connection diagram that graphically represents the history of each socket connection and allows you to drill into the finest of detail. This animation can even be exported to HTML and saved to the web!

Major Features
- See data flow between socket connections
- Animated socket connection diagram
- 'Pass Through' protocol handler for debugging protocols
- Connection failure simulation strategies allow you to simulate:
a) Slow or asymmetric Internet connections (bandwidth throttling)
b) Servers that are underpowered, overloaded or under attack (connection refusal)
c) Intermittent connections (connection termination)
d) Disconnected network cables (connection dangling)
e) Data floods and droughts
- Natively handles HTTPS (secure sockets) and POP3
- Real time logging of data. All events are logged to a CSV format ready for advanced analysis with a database or spreadsheet.
- Animated system tray icon unobtrusively indicates data flow direction

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MailMonitor
$49 - DigiArch.org

MailMonitor is a program enabling you to monitor incoming and outgoing mail traffic to and from you mail server and clients. It tracks, displays and logs incoming and outgoing SMTP sessions, POP sessions and sent and received e-mails. It can store incoming and outgoing e-mail in a separate directory independent of mail clients. Finally, it keeps a trace of all e-mail related session traffic (at packet level). This enables you to explore in depth what is going on in your e-mail environment.

These features make MailMonitor a valuable tool for tracking your e-mail flow in your e-mail environment in case of problems with sending or receiving e-mail. Watch for unsolicited mail forwarding, SMTP hacking (spammers that use your server to send their messages) and a host of other e-mail server related problems.

Features:

View SMTP and POP3 sessions with complete session trace.
Track all e-mails passing your server.
Monitor SMTP authentication with IP, username and password.
Monitor POP authentication.
Scan for mail errors and abnormalities.
Store every e-mail passing your server.
See a complete packet level trace of e-mail traffic only.
Supports VPN tunnels.

Bottom line: If you have mail server problems, MailMonitor shows you what's going on at port and packet level.

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EClean
$29.99 - Luminatech

EClean, an innovative anti-spam software created specifically for Webmasters and Website owners by a Web Hosting company and an Application Services firm, is a top of the line defense against E-mail address harvesting robots, spammers and UCEs and can be used by anyone with a POP E-mail box. EClean helps you to avoid being sent unsolicited E-mail messages by hiding your mailto: links through encoding, and as a pre-mail client authenticates and quarantines legitimate E-mail messages. Giving you the option of deleting UCEs before they get in your inbox.
Protect your address from being harvested by using a special encoded HTML mailto: link. When visitors click the link on your site to send you mail, their default E-mail client will open, the special encrypted link they clicked adds a unique code, specific only to your E-mail address, to the subject line of the message being sent. In the body of the message is displayed some short instructions… that they should not alter the subject line, but they can safely delete the text in the body and replace it with their own.
Then when you run EClean on your PC or workstation, it searches the messages on your E-mail server for the special codes added to the subject lines of legitimate business or personal transmissions from your Website. It also checks to see if the sender and / or sending Domain is an entry in your "trusted" section of the installed software. The software then pre-sorts your mail for you, separating the good from the bad, giving you an opportunity to view the messages that are suspected UCEs. Later, after you have been using EClean for a while, you can optionally turn on an additional feature "automatically" deleting the UCEs as well as setting the software to run on a schedule.
Now, you just open your regular E-mail client and it downloads your E-mail like usual… but the in-box is clean except for legitimate correspondences. Download it today for a 21 day free trial.

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Spam Sleuth
$29.95 - Blue Squirrel

Spam Sleuth monitors your e- mail box behind the scenes and analyzes e- mail messages for spam and virus characteristics. Our program keeps a report of what it finds so that you know why an e-mail has been deemed as spam. . If Spam Sleuth determines an e- mail is spam, it yanks it out of the e-mail server, compresses it so that it takes as little space as possible on your computer, and keeps a report with the suspect e- mail. When your e-mail program gets your e- mail, the spam has already been removed and you can read your e- mail the same way you always have, but without sorting through the junk e-mail to find the gems. Spam Sleuth is the best of the best and gives you control to customize the program to your liking.

Spam Sleuth uses a point system to eliminate spam. Spam Sleuth's analyzers: Friends, Spammers,To, Goodwords, Badwords, Profanity, Subject, Attachments, Charsets, HTML Volume, etc. looks at an e- mail a different way and assigns points. The more points an e-mail message receives the more likely it is to be deemed as spam. The less points an e-mail message receives the more likely it is a real gem.

E-mail Stamps: You can charge senders a fee to send you e-mail. When Spam Sleuth deems an e-mail message as spam an email sent back to the sender requiring them to pay a fee via PayPal before their message will be sent through to your inbox. (That's right, you make the spammers pay you to send junk e-mail.)
Turing Test: Similar to Email stamps, except that you don’t collect money. The turning test sends an email back to the sender and requires them to enter a validation code in order for Spam Sleuth to allow email messages through to your inbox. (Great way to know if you're dealing with a mindless machine or a real human on the other end.)
Bayesian Analysis: Looks at your previous e-mail and learns the characteristics of spam and good e-mail. Just like a baby, it needs to be taught right from wrong. By marking your messages as Good or Spam, and the

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