gmail problem connection

[hfrance]

SMTP Mail Transaction Log
Array
(
    [0] => CONNECTION: fsockopen(tcp://smtp.gmail.com)
    [1] => 220 smtp.gmail.com ESMTP v7sm7921742wrp.45 - gsmtp

    [2] => EHLO
    [3] => 501-5.5.4 Empty HELO/EHLO argument not allowed, closing connection.
501 5.5.4  https://support.google.com/mail/?p=helo v7sm7921742wrp.45 - gsmtp

    [4] => SMTP Server response Error