I installed Xenforo 1.4.7 and when i was trying to create another account for checking mail system it is not sending email. I am using default mailing system. Please tell me how to resolve it without putting SMTP.
The default email system just uses what PHP is configured to use (which would normally be an MTA installed on the server, such as Postfix). If it's not working, you will likely want to contact your host.