View postfix mail log

To view the postfix mail log, you can use the postlog command or tail command. Here are the steps:

Method 1: Using postlog command

1. Open a terminal as the root user or use sudo to gain root privileges.
2. Run the following command to view the postfix mail log:

   postlog -p /var/log/mail.log

   This will display the log messages in the terminal.

Method 2: Using tail command

1. Open a terminal as the root user or use sudo to gain root privileges.
2. Run the following command to view the postfix mail log:

   tail -f /var/log/mail.log

   The -f option tells tail to follow the file, so you'll see new log messages as they are written to the file.

Alternative methods

You can also use other commands to view the postfix mail log, such as:

• less command: less /var/log/mail.log
• more command: more /var/log/mail.log
• grep command: grep postfix /var/log/mail.log (to search for specific keywords or patterns)

Tips

• Make sure that the postfix mail log file is located at /var/log/mail.log. If it's located elsewhere, update the path accordingly.
• You can use the postlog command with additional options to filter the log messages, such as -s to specify a specific log level (e.g., postlog -s error /var/log/mail.log to view only error messages).
• If you're using a Linux distribution that uses systemd, you may need to use the journalctl command to view the postfix mail log, such as journalctl -u postfix or journalctl -u postfix -f /var/log/mail.log.