Repeated failure to send mail over Gmail SMTP about nodemailer HOT 6 CLOSED

{
    host:"smtp.gmail.com",
    user: ....
    debug: true
}

RECEIVE (1):
└──"502 5.5.1 
Unrecognized command. p24sm599286bkw.41\r\n502 5.5.1 
Unrecognized command. p24sm599286bkw.41\r\n502 5.5.1 
Unrecognized command. p24sm599286bkw.41\r\n502 5.5.1 
Unrecognized command. p24sm599286bkw.41\r\n" ""

CONNECTION (1): 220 mx.google.com ESMTP p24sm599286bkw.41
Connection established! (1)
SEND (1):
└──"EHLO [127.0.0.1]\r\n"
RECEIVE (1):
└──"250-mx.google.com at your service, [93.86.179.167]\r\n250-SIZE 
35882577\r\n250-8BITMIME\r\n250-AUTH 
LOGIN PLAIN XOAUTH\r\n250 ENHANCEDSTATUSCODES\r\n" ""
Routing Data (1)
SEND (1):
└──"AUTH PLAIN .... ==\r\n"
RECEIVE (1):
└──"235 2.7.0 Accepted\r\n" ""
Routing Data (1)
SEND (1):
└──"MAIL FROM:<[email protected]>\r\n"
RECEIVE (1):
└──"250 2.1.0 OK p24sm599286bkw.41\r\n" ""
Routing Data (1)
SEND (1):
└──"DATA\r\n"
RECEIVE (1):
└──"503 5.5.1 RCPT first. p24sm599286bkw.41\r\n" ""
Routing Data (1)
SEND (1):
└──"X-Mailer: Nodemailer (0.1.22; +http://www.nodemailer.org)\r\nDate: 
Fri, 29 Jul 2011 14:51:41 GMT\r\n
From: \"Herd Hound Team\" <[email protected]>\r\n
Subject: [Herd Hound] Welcome to Herd Hound!\r\n
MIME-Version: 1.0\r\n
Content-Type: multipart/alternative;\r\n        
boundary=\"----NODEMAILER-?=_2-1311951101991\"\r\n\r\n"
SEND (1):
└──"------NODEMAILER-?=_2-1311951101991\r\nContent-Type: text/plain; 
charset=UTF-8\r\nContent-Transfer-Encoding: quoted-printable

MESSAGE BODY

RECEIVE (1):
└──"502 5.5.1 
Unrecognized command. p24sm599286bkw.41\r\n502 5.5.1 
Unrecognized command. p24sm599286bkw.41\r\n502 5.5.1 
Unrecognized command. p24sm599286bkw.41\r\n502 5.5.1 
Unrecognized command. p24sm599286bkw.41\r\n" ""

RECEIVE (1):
└──"503 5.5.1 RCPT first. p24sm599286bkw.41\r\n" ""