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Does your Firewall allow SPAMfighter to come online?

You can download this program to test your connection to our backend server:
http://download.spamfighter.com/download/backendtestclient.exe

When the program is running please check if it writes "OK" or "Failed" - when it is finished you can close the program by clicking on the "X" in the upper right corner.
If you received the message "failed", you probably are behind a firewall which isn't allowing SPAMfighter to communicate with the SPAMfighter server.
You need to make these changes in your firewall to communicate with our server:
TCP Settings
Direction: Outbound
Local Port: All
Remote Port: Fixed (2409)
UDP Settings
Direction: Outbound & Inbound
Local Port: All
Remote Port: Fixed (2409)