Read mail linux address

A classic!

In Linux, the /etc/mail/aliases file is used to map email addresses to other email addresses or to a specific program that handles the email.

Here's how to read the mail aliases file:

1. Open the file in a text editor:

   sudo nano /etc/mail/aliases

2. The file contains a list of email addresses and their corresponding aliases. Each line starts with a username or a special keyword, followed by a colon and the email address or program to be executed.

Example:

root: postmaster
postmaster: root
www-data: webmaster

In this example:

• root is aliased to postmaster.
• postmaster is aliased to root.
• www-data is aliased to webmaster.

3. You can also use the mail command to read the aliases file:

   mail -v -f /etc/mail/aliases

   This will display the contents of the aliases file, along with some additional information.

4. If you want to update the aliases file, you can use the newaliases command:

   sudo newaliases

   This will rebuild the aliases database and make the changes effective.

Note: The /etc/mail/aliases file is specific to the Sendmail mail server. If you're using a different mail server, such as Postfix or Exim, the configuration file may be different.