Unable to Send Emails through Application

For some reason, any method I attempt to use, PHP Mail, Send Mail or SMTP nothing seems to work.

When I configure SMTP and try to send an email, it comes up with a blank screen with the following url: http://clients.avscotland.com/index.php/mailer/send_quote/

Can anyone shred some light on this one?

Thanks

Please follow the instructions in the FAQ about the debug mode.