email - How to configure php.ini to work with smtp4dev?

So, I downloaded and installed smtp4dev.

When i try sending a mail in my php file:

mail('localhost', "Hey there", "no");
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i get an error from php.ini, complaining that sendmail_from isnt declared.

I tried declaring it:

sendmail_from = [email protected]ost
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That made php silent, but still doesnt work - tries to load the page for 30 seconds and then another error. Fatal error: Maximum execution time of 30 seconds exceeded.

How must i configure php.ini for it to work?

php.ini

[mail function]
; For Win32 only.
; http://php.net/smtp
SMTP = localhost
; http://php.net/smtp-port
smtp_port = 25

; For Win32 only.
; http://php.net/sendmail-from
;sendmail_from = [email protected]

; For Unix only.  You may supply arguments as well (default: "sendmail -t -i").
; http://php.net/sendmail-path
;sendmail_path = "\"C:\xampp\sendmail\sendmail.exe\" -t"

; Force the addition of the specified parameters to be passed as extra parameters
; to the sendmail binary. These parameters will always replace the value of
; the 5th parameter to mail(), even in safe mode.
;mail.force_extra_parameters =

; Add X-PHP-Originating-Script: that will include uid of the script followed by the filename
mail.add_x_header = Off

; Log all mail() calls including the full path of the script, line #, to address and headers
;mail.log = "C:\xampp\apache\logs\php_mail.log"
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