[CentOS-es] ayuda

Hola gente necesito de su ayuda con este tema no se a que se deba este error, quisas algunos de ustedes ya les paso ????....

Hi. This is the qmail-send program at mail.gammacargo.com. I'm afraid I wasn't able to deliver your message to the following addresses. This is a permanent error; I've given up. Sorry it didn't work out.

Rony@fashionforwardworldwide.com: User and password not set, continuing without authentication. Rony@fashionforwardworldwide.com 64.224.219.122 failed after I sent the message. Remote host said: 554 5.7.1 The message from (soporte@gammacargo.com) with the subject of (Correo de Prueba) matches a profile the Internet community may consider spam. Please revise your message before resending.