Fake mail server name

Here are some fake mail server names that you can use for testing or demonstration purposes:

1. mail.example.com
2. smtp.fakemail.com
3. mailinator.com (Note: This is a real mail server, but it's designed for testing and demo purposes)
4. testmail.org
5. smtp4dev.com
6. mailhog.com (Note: This is a real mail server, but it's designed for testing and demo purposes)
7. fakeemail.com
8. smtpserver.com
9. mailtest.com
10. devmail.com

Please note that these are just examples, and you should not use them for production purposes. It's always recommended to use a real mail server with a valid domain name and configuration for production environments.

Also, keep in mind that some of these fake mail servers may have limitations or restrictions on the number of emails you can send or receive, or may have specific requirements for authentication or configuration. Be sure to check the documentation or terms of service for each fake mail server before using it.