I am running on linode ubuntu 10.04 LTS. Before i was with hostgator and everything would work as norm. I am using php for the main under global config and using admin@terwax.com.

Oh and i use google apps, so gmail for mail.

You need to tell your linode how to send mail. This depends on your flavour of linux, but there's an example here:

http://library.linode.com/email/exim/se ... 0.04-lucid

Php should then be able to send mail.

I already use google apps, isn't that enough?

the test worked but it was sent to my hotmail junk

Google Apps is for incoming mail, and any mail that you personally send. Automated sending from your website is a different problem. Some web apps can be configured to send e-mails through your Google Apps account, but most apps can't.

In order to prevent major e-mail services from treating your automated messages as spam, you'll need to do a few things.

- Add your server's address to your domain's SPF record.
- Make sure that your server's mailname is identical to the reverse DNS entry for your IP address.
- Never use anything other than your own admin e-mail address (belonging to the same domain as the website) in the "From" field.
- You may still need to ask a few users to click "Not Spam", so that the e-mail service's spam filter knows what to do.