Mail subject encoding problem

Hi gang, I have developed a web intranet and I have added mail notification when some tasks are done. I am using the mail() function to send mail since no advanced features are needed like attachments. So I am facing a weird problem with the mail subject encoding. Let me explain. I am having a FreeBSD web server for development that is working like a charm when sending mail using something like this: // Define the e-mail content $email = "foo@foo,com"; $subject = "H εργασία: (id: 1868) έκλεισε χωρίς σχόλια."; $message = "Αυτό είναι ένα τέστ. Αυτό είναι ένα τέστ. Αυτό είναι ένα τέστ."; // $subject = mb_encode_mimeheader($subject,'iso-8859-1','B'); // Set the headers and send the e-mail $headers = 'MIME-Version: 1.0' . "\r\n"; $headers .= 'Content-type: text/html; charset=utf-8' . "\r\n"; $headers .= "From: test@foo.com\r\nReply-To: test@foo.com\r\nX-Mailer: PHP"; mail($email,$subject,$message,$headers); The language in both subject and mail body is Greek. But when I am uploading this to a Linux CentOS 5.2 server this mail is being sent but the subject is rubbish. All encodings are in UTF-8 (the php file, the encoding of the mail client etc) so to solve this I have added the mb_encode_mimeheader line. This quite many times although sometimes it works. I have also tried to set quoted-printable mime encoding with similar results. FreeBSD has PHP 5.2.8 Linux has PHP 5.2.5 The php.ini used is almost identical. Any ideas on this ?? -- Thodoris