Email Tests From Home Computer

[jtmerchant]

I'm building a website on my local computer and I want to send emails. I found the mail() function but I cannot get it to work. I call it like this:

mail($email,"Forum Registration Key",
         "Copy and paste this key into the box on the registration page:\n$randkey",
         "From: localhost");

I have tried variations on From, ie. noreply@localhost, etc, but I keep getting this error:

Warning: mail() [function.mail]: SMTP server response: 550 5.7.1 Unable to relay for (whatever $email is) in C:\PHP Site\forum\b1\actionp.php on line 122

What exactly is the problem and how can I get this to work?

[planetsim]

A few things your SMTP settings may not be setup correctly within the php.ini file, or your SMTP server isnt set up correctly now since we dont know what SMTP server your using I cant be of anymore help.