Hi, can someone more familiar with the mail feature please take care of this? Thanks, Magnus Original mail from : Tony Weber Message body follows: Hi, I recently installed Media Wiki, and email would not send. It happens because some email server refuse bare LF in the email body. See http://cr.yp.to/docs/smtplf.html. Media Wiki code composes email body with bare LF "\n" instead of CRLF "\r\n". The fix is simple: replace all bare LF with CRLF. In the file UserMailer.php, add a line immediately after the function userMailer(): --- BEFORE --- function userMailer( $to, $from, $subject, $body, $replyto=false ) { global $wgUser, $wgSMTP, $wgOutputEncoding, $wgErrorString, $wgEmergencyContact; --- AFTER --- function userMailer( $to, $from, $subject, $body, $replyto=false ) { global $wgUser, $wgSMTP, $wgOutputEncoding, $wgErrorString, $wgEmergencyContact; $body = preg_replace("/^(?=\n)|[^\r](?=\n)/", "\\0\r", $body); // replace LF with CRLF: see http://cr.yp.to/docs/smtplf.html This regular expression matches all characters which precede "\n" except "\r". It then replaces them with the original character (\\0) plus "\r". As a special case, it also matches a "\n" as the first character, and replaces it with "\r\n". Best regards, Tony