PostCast SMTP Server
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Minimize the program at start-up

The program will be minimized at start-up. If you select the "Show system tray" option, it will be visible as an icon only in the system tray.

Minimize after pressing the 'X' button

This option enables the program to continue to work in the background after the 'x' (close) button is pressed. If you want to close the program after pressing the 'x' button on the main window, deselect this check box.

Move sent messages to Sent Items folder

If this option is selected, the program creates a copy of each successfully sent message in the Sent Items folder. All attached files are also stored in the Sent Items folder. If you send a lot of attachments, you should probably periodically delete all messages from that folder, or disable storing sent messages completely in the Settings/Advanced screen.

Move deleted messages to Deleted Items folder

If this option is selected, the program creates a copy of each deleted message in the Deleted Items folder.

Run at system startup

If you activate this option, the program will automatically start with the Windows start-up. You will not need to start it manually.

Show balloon tooltips when minimized

The program displays the tooltip window after receiving or sending messages. Tooltips are also displayed in some other situations, like when the program detects the new DNS server or automatically configures itself to run on a new IP address.

Show system tray icon

The program will be visible as an icon in the system tray. When you minimize it, it will not be viewed in the Windows taskbar. To access it, you should click on the icon with the left or right mouse button.

When running minimized in the system tray, the program allows you to access the most important options from the pop-up menu when you right-click its icon. This simplifies the basic operations and allows you to have more control over the program without opening the main window.

Allow the program to send messages inside the LAN

The program can send messages to LAN addresses in which case every e-mail must be addressed using the following format: User@IP or User@Computer. Do not select this option if you do not use any internal POP3 or IMAP server because it can slow down the sending process.

Delete messages that cannot be delivered before sending

The program is able to automatically delete messages from the Outbox folder if fatal errors are received during the previous sending. This helps the program to speed up sending because there is no need to try to send messages that are clearly not deliverable.

Detect changed IP addresses and configure the program

If you configure the server to use the LAN or the Internet IP address and if that address changes, the program will automatically detect the new settings. The program allows you to select the IP address from the 'Host Name' drop-down list in the Settings screen. The next time your IP address changes, it automatically detects the new settings.

This is useful if your computer's LAN address is not static. This is also helpful if you change the connection to the Internet and your ISP assigns the new IP address to the computer.

Run in Outlook 2002 compatibility mode

Select this option to enable PostCast Server to receive messages from Outlook 2002. Do not select it if you do not use Outlook 2002 because it slows down SMTP communication with all e-mail clients.

There is a known bug in Outlook 2002 when it sends messages to a local SMTP server. Outlook drops the response to one of the commands that it issues if the response is received too quickly. Outlook then waits for its timeout period for the response (which was already received but ignored) and then gives up.

Try also to assign a higher priority for PostCastServer.exe in Task Manager tool on Windows 2000/XP/2003. Select Start>Run and enter taskmgr.exe to start task manager. Locate PostCastServer.exe in the Processes tab, right-click and select 'Set Priority > AboveNormal'.

Automatically check for updates

This feature downloads an ini file from our server which contains information about the latest version. It uses standard HTTP connection to connect to the postcastserver.com server and check for updates. It periodically downloads a text file which contains information about the latest version from:

If the new version is available, the program automatically notifies you.

Server identity for "HELO" handshaking command

You can specify the value that will be used for server identification during the 'HELO handshaking' process that occurs every time the program connects to remote mail servers. This value will also be used to create a From e-mail address in bounced e-mail messages.

Some SMTP servers check if the HOSTNAME in the HELO field corresponds to the IP address of the connecting host. In some situations the message cannot be delivered if the value does not point to a correct domain name or an Internet IP address of your computer. For more information about this problem, see this page.

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