Running, IIS5/Win2000/PHP401sp2, I set my "SMTP" variable in php.ini to smtp.paradise.net.nz, my ISP's email server and "sendmail_from" to antiphobo@paradise.net.nz. However this means the recipients to my emails using the MAIL() function can ONLY be other @paradise.net.nz users. If I try to send email to ANYWHERE else, eg blah@hotmail.com, I see "Warning: Server Error in ... on line ...". How do i get around this?