After installing send mail in ubuntu page keeps on loading

A frustrating issue!

When the page keeps loading after installing Sendmail in Ubuntu, it's often due to a configuration issue or a conflict with another service. Here are some troubleshooting steps to help you resolve the issue:

  1. Check the Sendmail service status:
    • Run the command sudo systemctl status sendmail to check the status of the Sendmail service.
    • If the service is not running, try starting it with sudo systemctl start sendmail.
  2. Verify the Sendmail configuration:
    • Check the Sendmail configuration file /etc/mail/sendmail.cf for any errors or typos.
    • Make sure the file is readable and writable by the Sendmail user (usually sendmail).
  3. Check the DNS settings:
    • Ensure that your DNS settings are correct and your domain is properly configured.
    • Check the /etc/resolv.conf file to verify the DNS server settings.
  4. Check for conflicts with other services:
    • If you have other mail servers or services running on your system, they might be conflicting with Sendmail.
    • Try stopping or disabling these services to see if it resolves the issue.
  5. Check the Sendmail logs:
    • Look for errors in the Sendmail logs by running sudo grep -i error /var/log/mail.log (or sudo grep -i error /var/log/mail.err on older systems).
    • This can help you identify the cause of the issue.
  6. Try restarting the Sendmail service:
    • Run sudo service sendmail restart (or sudo systemctl restart sendmail on newer systems) to restart the Sendmail service.
  7. Check the Sendmail version:
    • Make sure you're running a compatible version of Sendmail. You can check the version by running sendmail -v.
    • If you're running an older version, consider upgrading to a newer version.
  8. Try reinstalling Sendmail:
    • If none of the above steps resolve the issue, try reinstalling Sendmail with sudo apt-get install sendmail (or sudo apt-get install sendmail-mta on newer systems).

If none of these steps resolve the issue, you may want to seek further assistance from the Ubuntu community or a Linux expert.