Kde může být chyba ve funkci která využívá php fci mail

function oc_mail($to, $subject, $body, $hdr='', $enc='quoted-printable') {
	global $OC_configAR;
	$headers = (empty($hdr) ? $OC_configAR['OC_mailHeaders'] : $hdr);
	if ($OC_configAR['OC_mailUTF8']) {
		$headers = "MIME-Version: 1.0\r\n" . $headers . "\r\nContent-Type: text/html; charset=UTF-8\r\nContent-Transfer-Encoding: " . $enc;
		$headers = preg_replace("/\r/", "", $headers);
		switch ($enc) {
			case 'base64':
				$body = chunk_split(base64_encode($body));
				$subject = "=?UTF-8?B?" . base64_encode($subject) . "?=";
				break;
			default:
				$body = oc_qpencode($body);
				$subject = "=?UTF-8?Q?" . rtrim(preg_replace(array("/[\r\n].*$/", "/\s+/", "/\?/"), array("", "_", "=3f"), oc_qpencode($subject)), '= ') . "?="; // only use first line for subject and replace spaces/?s
				break;
		}
	} else {
		$body = wordwrap($body, $OC_configAR['OC_emailWrap']);
	}
	return(mail($to, $subject, $body, $headers, $OC_configAR['OC_mailParams']));
}

// Sends out optionally utf-8 enabled email
// Note: headers are not converted except for subject
// We are defaulting to QP so bounced messages can be more easily read (for non-CJK)
function oc_mail($to, $subject, $body, $hdr='', $enc='quoted-printable') {
	global $OC_configAR;
	$headers = (empty($hdr) ? $OC_configAR['OC_mailHeaders'] : $hdr);
	if ($OC_configAR['OC_mailUTF8']) {
		$headers = "MIME-Version: 1.0\r\n" . $headers . "\r\nContent-Type: text/html; charset=UTF-8\r\nContent-Transfer-Encoding: " . $enc;
		$headers = preg_replace("/\r/", "", $headers);
		switch ($enc) {
			case 'base64':
				$body = chunk_split(base64_encode($body));
				$subject = "=?UTF-8?B?" . base64_encode($subject) . "?=";
				break;
			default:
				$body = oc_qpencode($body);
				$subject = "=?UTF-8?Q?" . rtrim(preg_replace(array("/[\r\n].*$/", "/\s+/", "/\?/"), array("", "_", "=3f"), oc_qpencode($subject)), '= ') . "?="; // only use first line for subject and replace spaces/?s
				break;
		}
	} else {
		$body = wordwrap($body, $OC_configAR['OC_emailWrap']);
	}
	return(mail($to, $subject, $body, $headers, $OC_configAR['OC_mailParams']));
}

// Sends an email message, adding OC_confName to beginning of subject line, and cc'ing OC_confirmmail and including IP address if requested
function sendEmail($to, $subject, $body, $ccConfirm=0) {
	global $OC_configAR, $OC_mailHeaders, $OC_mailParams;
	// include confirm address?
	if ($ccConfirm) {
		$to .= ',' . $OC_configAR['OC_confirmmail'];
		// trim in case no $to passed
		$to = ltrim($to,',');
	}
	// Bail out successfully(?) if no one to email
	if (empty($to)) { return(TRUE); }
	// Add conf name to beginning of subject
	$subject = "[" . $OC_configAR['OC_confName'] . "] " . $subject;
	// Include IP in message body?
	if ($OC_configAR['OC_notifyIncludeIP']) {
		$body .= "<br /><br />IP Address: " . $_SERVER['REMOTE_ADDR'];
	}
	// Send message & return whether successful
	return(oc_mail($to, $subject, $body, $OC_mailHeaders));
	//return(mail($to, $subject, $body, $OC_mailHeaders));

}

// Encode text into quoted-printable format
function oc_qpencode($what, $linelenmax = 75) {
	$eol = "\n"; // using \n instead of \r\n to avoid double-spaced messages in Outlook
	$encoded = '';
	$lines = preg_split("/(?:\r\n|\r|\n)/", $what);
	while(list(, $line) = each($lines)) {
		$linelen = strlen($line);
		$encline = '';
		for ($i=0; $i<$linelen; $i++) {
			$c = substr($line, $i, 1);
			$cdec = ord($c);
			if (($cdec == 32) && ($i == ($linelen - 1))) {
				$c = '=20';
			} elseif (($cdec == 61) || ($cdec < 32) || ($cdec > 126)) {
				$c = '=' . strtoupper(sprintf('%02s', dechex($cdec)));
			}
			if ((strlen($encline) + strlen($c)) >= $linelenmax) {
				$encoded .= $encline . '=' . $eol;
				$encline = '';
			}
			$encline .= $c;
		}
		$encoded .= $encline . $eol;
	}
	$encoded = substr($encoded, 0, -1 * strlen($eol));
	return $encoded;
}