/**
* Send a email via Pear mail package
*/
function sendPearMail($to, $subject, $body, $headers /* , "-f$bounceAddress") */ ) {
   require_once "PEAR.php";
   require_once "Mail.php";

   $headers["Subject"] = $subject;
   $headers["To"] = $to;

   $from = $headers["From"] ;
   $host = "smtp.myserver.de";
   $username = "myusername";
   $password = "mypassword";

   $smtp = Mail::factory('smtp',
    array ('host' => $host,
      'auth' => true,
      'username' => $username,
      'password' => $password));

   $mail = $smtp->send($to, $headers, $body);
   if (PEAR::isError($mail)) {
    // echo("<p>" . $mail->getMessage() . "</p>");
    return FALSE;
    } else {
    // echo("<p>Message successfully sent!</p>");
    return TRUE;
    }
}

mail(...)

if(!($result = @mail($to, $subject, $fullBody, $headers, "-f$bounceAddress"))) {
      $result = mail($to, $subject, $fullBody, $headers);
   }

$result=sendPearMail($to, $subject, $fullBody, $headers);

      $headers = processHeaders($headers);

'./configure' '--prefix=/usr/' '--datadir=/usr/share/php/' '--bindir=/usr/bin/' '--libdir=/usr/share/' '--with-exec-dir=/usr/lib/php/bin/' '--with-config-file-path=/etc' '--with-config-file-scan-dir=/etc/php5-config' '--enable-discard-path' '--enable-force-cgi-redirect' '--enable-memory-limit' '--enable-sigchild' '--enable-track-vars' '--enable-trans-sid' '--disable-mysql' '--disable-pdo' '--disable-dom' '--enable-bcmath' '--enable-calendar' '--enable-ctype' '--enable-dbase' '--enable-exif' '--enable-filepro' '--enable-ftp' '--enable-magic-quotes' '--enable-mbstr-enc-trans' '--enable-mbstring' '--enable-mbregex' '--enable-shmop' '--enable-sysvsem' '--enable-sysvshm' '--enable-wddx' '--with-gettext' '--with-mcrypt' '--with-iconv' '--with-mcal' '--with-mcrypt' '--with-zlib' '--with-bz2' '--with-gmp' '--with-openssl=/usr' '--with-pear' '--enable-zip' '--with-recode' '--enable-suhosin' '--with-apxs2=/usr/sbin/apxs'