Postfix test send mail

To test the postfix mail server, you can use the sendmail command or a tool like telnet to send a test email. Here are the steps:

Method 1: Using sendmail command

  1. Open a terminal as the root user or use sudo to gain root privileges.
  2. Run the following command to send a test email:
    sendmail -v -f [email protected] [email protected]

    Replace [email protected] with your actual email address and [email protected] with the email address you want to send the test email to.

The -v option enables verbose mode, which will show you the email headers and body.

Method 2: Using telnet command

  1. Open a terminal as the root user or use sudo to gain root privileges.

  2. Run the following command to connect to the postfix mail server using telnet:

    telnet localhost 25

    This will connect you to the postfix mail server on port 25.

  3. Once connected, type the following command to send a test email:

    
    HELO [email protected]
    MAIL FROM: [email protected]
    RCPT TO: [email protected]
    DATA
    Subject: Test email from postfix
    This is a test email sent from postfix.

. QUIT

Replace `[email protected]` with your actual email address and `[email protected]` with the email address you want to send the test email to.

The `HELO` command is used to identify your email client, `MAIL FROM` specifies the sender's email address, `RCPT TO` specifies the recipient's email address, `DATA` starts the email body, and `QUIT` terminates the connection.

After sending the test email, you can check your email account to see if the email was delivered successfully.

**Troubleshooting**

If you encounter any issues while sending the test email, you can check the postfix mail server logs to troubleshoot the problem. The logs are usually located in `/var/log/mail.log` or `/var/log/postfix.log`, depending on your Linux distribution.

You can also use the `postfix` command to test the mail server configuration:

postfix check


This command will check the postfix configuration and report any errors or warnings.