How to send mail from centos

To send mail from a CentOS system, you'll need to configure the mail transfer agent (MTA) and set up a mail client. Here's a step-by-step guide:

Step 1: Install the mail transfer agent (MTA)

You'll need to install an MTA on your CentOS system. The most popular MTA is Postfix. You can install it using the following command:

sudo yum install postfix

Step 2: Configure Postfix

Edit the Postfix configuration file to set up the mail server:

sudo nano /etc/postfix/main.cf

Add the following lines to the end of the file:

mydestination = localhost
myhostname = localhost

Save and exit the file.

Step 3: Restart Postfix

Restart the Postfix service to apply the changes:

sudo systemctl restart postfix

Step 4: Set up a mail client

You can use a mail client like mail or mutt to send mail from the command line. Here's an example using mail:

sudo yum install mailx

Then, use the following command to send a mail:

echo "Subject: Test mail" | mail -s "Test mail" <[email protected]>

Replace <[email protected]> with the email address of the recipient.

Alternative: Using sendmail

If you prefer to use sendmail instead of Postfix, you can install it using:

sudo yum install sendmail

Then, use the following command to send a mail:

echo "Subject: Test mail" | sendmail -v <[email protected]>

Additional tips

• Make sure to replace <[email protected]> with the actual email address of the recipient.
• If you're behind a firewall or proxy, you may need to configure your mail client to use a specific SMTP server or port.
• You can also use a GUI mail client like Thunderbird or Evolution to send mail from your CentOS system.

That's it! You should now be able to send mail from your CentOS system using the instructions above.