To test connection, try connecting to the SMTP server with telnet client. Telnet usually is not blocked by firewall software.
Telnet application is not available by default. You have to enable telnet client once, or otherwise, you will receive error message: 'Telnet' is not recognized as an internal or external command, operable program or batch file.
How to telnet SMTP server? First, start the Command prompt. In CMD window enter:
telnet smtp.example.com 25 and after, enter
helo testing in the console.
C:\>telnet smtp.example.com 25
220 smtp.example.com ESMTP Service ready!
If connection was successful, the server should return code 220 with optional greeting message. After helo command, the mail server responds with code 250.
If SMTP server is accessible from telnet as shown in example, then inability to email via febootimail is likely caused by Firewall or Antivirus software. Try allowing febootimail.exe in the firewall settings.
Note that while in telnet, it is not allowed to use backspace. If a mistake is made while typing commands, the whole line should be retyped without making any corrections.
This article may be referenced as (KB ID: 514).
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