Another problem with SMF, built in mail system

[smtv620]

(Picture links at the end)
So after my troubles with localhost IPs got sorted out, I noticed the email system for SMF isn't working, so no registration emails will be sent, no notices and no notifications.

The emails not sending has been logged in the error log, but there's no real information why.
I've left SMF on the default which is "PHP default", everyone on the SMF forums say this should work fine.

Is there a way I can find the SMTP server settings, or is there a reason why "php default" mail isn't working?
Thanks.

http://i.imgur.com/9B9mR.png - Error log
http://i.imgur.com/jJL8e.png - Current mail settings

---------- Post added at 10:19 PM ---------- Previous post was at 12:31 PM ----------

Apologizes, I see it is being worked on PHP Mail

Gonna close this thread.