1. Check the IP address of your computer.
2. Ensure that the IP address is authorized to use your emails.
3. Check the computer’s firewall and antivirus settings.
4. Make sure that the SPAM filter and forwarding settings are correct.
5. Ensure that the outgoing server settings are correctly configured.
6. Verify that the router or modem is configured correctly for email.
7. Contact your email service provider for further assistance.
8. Check if the email inbox is full and delete unwanted emails.