Explanation marks in mail sent w/ php

hello, I'm using the following scheme to create html mails. The messages are sent mime multipart mixed, and everything seems to be working. However, lines are randomly cut within the mail html message body and explaination marks !!! are inserted. This disrupts the html tags, and the html mail doesn't format right. I'm sending an example to the list with the same subject as this message now. any help appreciated. i know there are php classes to do these things, but would prefer to fix this. $fcontents_html=join('',file("http://photo.mediachex.com/s_main/msg_content/header.html")); $fcontents_html.=join('',file("http://photo.mediachex..com/s_main/msg_content/body.html")); $fcontents_html.=join('',file("http://photo.mediachex.com/s_main/msg_content/footer.html")); mail($to, $subject, $fcontents_html, $header); many thx.