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Your domain:
Your domain:

  • Windows: Click the Windows button at the bottom left corner, type cmd and press enter an "MS-DOS" or "Command Prompt" window appears
  • MAC: It is usually the terminal in Mac HD -> "Applications" -> "Utilities". Open the program called Terminal
  • Linux: open your favorite terminal

Command to use:

Telnet sudominio.com 25

If "200 sudominio.com ESMTP" it is indicated on the answer, there is connection to port 25 (outgoing email).

  • Windows: Click the Windows button at the bottom left corner, type cmd and press enter an "MS-DOS" or "Command Prompt" window appears
  • MAC: It is usually the terminal in Mac HD -> "Applications" -> "Utilities". Open the program called Terminal
  • Linux: open your favorite terminal

Command to use:

Telnet sudominio.com 110

If "+ OK Hello there." it is indicated on the answer, there is connection to port 110 (for receiving email) .