How To Check Smtp Configuration In Linux

Check Smtp Configuration In Linux

If you are going to use an email service on your Linux computer, you need to set up the mail server and your SMTP (Simple Mail Transfer Protocol). Once the setup is successful, you can use the email service on your Linux computer. Suppose you are looking out to check the SMTP configuration on your Linux computer, you can easily perform it using the Terminal window. So, as per the instructions given on this page, you know How To Check Smtp Configuration In Linux.

Check The Smtp Configuration Using Telnet

To check the SMTP configuration using Telnet, perform the steps given below.

  • Step : 1 First, check if Telnet is available on your Linux. If not, install it using the Terminal window.
  • Step : 2 Press the Ctrl, Alt, and T keys together on your keyboard to launch the Terminal window on your Linux computer.
  • Step : 3 Now, you need to update all your system packages with the latest available updates using the below command.
  • yum update -y

    After the system update is successful, you can install the Telnet client package using the below command.

    sudo yum install telnet
  • Step : 4 Once the Telnet installation is successful, you can check the SMTP configuration.
  • Step : 5 Enter the below command into the Terminal window.
  • telnet [your hostname] [port no]
  • Step : 6 In the above command, replace “your hostname” with the respective hostname of your email service. Also enter the respective port number in the place of “port no.”
  • Step : 7 Now, you can check the SMTP configuration on your Linux computer.

Check The Smtp Configuration Using Ncat Or Nc

Ncat or Nc is a CLI tool which is used for port scanning, and as a security and monitoring tool. Follow the below instructions to check the SMTP configuration.

  • Step :1First, you need to ensure that Ncat or Nc is available on your Linux. If not, install it using the Terminal window.
  • Step :2Launch the Terminal window on your Linux computer.
  • Step :3Update all your system packages with the latest available updates using the below command.
  • yum update -y
  • Step :4Once the system update is successful, you can install the Ncat or Nc client package using the below command.
  • sudo yum install nmap-ncat –y
  • Step :5After the installation’s successful, you can check the SMTP configuration.
  • nc -v -u smtp.example.com 587
  • Step :6Once the above command executes successfully, you can see the SMTP configuration on your Linux computer.

You know How To Check Smtp Configuration In Linux by following the above instructions.

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