I have this problem
I am trying to send mail externily from my SMTP server(exchange 2000) using mail() function.
I have no problem if I send to a internal address (christopher.seidel@jerovsek.si), however if I try to sent to a external address (chrisseidel@hotmail.com) I recieve Warning: Server Error, do I need to authinicate to the exchange server who I am so I can send external e-mail, or is this a different problem?
Thanks
**************configuration***********
PHP4.04
Exchange 2000
IIS 5.0