i dont receive emails for approving

[ozan@amigapple.com]

Script URL: https://amtifa.com/gbook/gbook.php
Version of script: 1.9.0
Hosting company: reg.ru
URL of phpinfo.php: ?
URL of session_test.php: ?
What terms did you try when SEARCHING for a solution:
i tried to search email configuration. i could not find.
Write your message below:
my guestbook was working, i was receiving emails for approval. ( last time 2 months ago)
today i have checked, filled several posts for testing. no email receiving for approval.
it is not working.
what should be happened?
is it any way to add, for example smtp email settings to php code, for sending and receiving approval emails?

[Klemen]

GBook relies on your PHP mail() function; it doesn't have any SMTP functionality.

Make sure your PHP mail() works, and emails will be sent again.

[ozan@amigapple.com]

resolved. thanks
yes php settings