telnet smtp.servidor.com 25
Trying 172.19.202.14...
Connected to smtp.servidor.com.
Escape character is '^]'.
220 Unauthorized access prohibited.
The information on this system is property of this Organization and is protected by intellectual property rights.
You must be assigned an account to access information defined by the System Administrators
Your activities will be monitored.
HELO miservidor.msf.net
250 smtp.servidor.com Hello [172.19.195.31]
MAIL FROM: remitente@micorreo.com
250 2.1.0 Sender OK
RCPT TO: enviar@correo.com
250 2.1.5 Recipient OK
DATA
354 Start mail input; end with <CRLF>.<CRLF>
Prueba
.
250 2.6.0 <21cd0b0e-758c-46f3-b1ab-fcff53d46840@smtp.servidor.com> [InternalId=4314826] Queued mail for delivery