I try to send e-mail by Mass E-mail of ACP
When I selected one person to mail , it is success.
But When I selected more than 2 person . It is failure .
And log is show
"Errno 2: mail(): SMTP server response: 553 5.1.3 <undisclosed-recipients:;>... List:; syntax illegal for recipient addresses at [ROOT]/includes/functions_messenger.php line 1843"
I checked about messenger.php line 1843, it is shown
"$result = mail($to, mail_encode($subject, ''), wordwrap(utf8_wordwrap($msg), 997, "\n", true), $headers, $additional_parameters);"
I had tried to re-install to another system.The probles is the same.