co3.conexcol.com:~# telnet mail.remo.com.co 25
Trying 74.52.97.242...
Connected to mail.remo.com.co.
Escape character is '^]'.
220 enterplesk4.domihosting.com ESMTP
helo co3.conexcol.com
250 enterplesk4.domihosting.com
mail from:gerencia@vcb.com.co
250 ok
rcpt to:luze.debedout@remo.com.co
250 ok
data
354 go ahead
Subject:Prueba de Correo

Hola, esto es simplemente una prueba.

.
250 ok 1175632981 qp 4909
quit
221 enterplesk4.domihosting.com
Connection closed by foreign host.