Cannot send email with codeigniter librrary in live dedicated server

[eluser]Simian Studios[/eluser]
Further to pickupman's suggestions, it could be that the mail is being sent, but just not received. CI has a useful email debugging tool, $this->email->print_debugger(), which you can use to help diagnose any problems, so it may be worth setting up a test script which attempts to send an email, then spits out the debug output, to see if that can shed any light..