I can't send out e-mail

[Guest]

I'm Luis from Argentina
When I try to send a mail the following message appears:

La dirección de correo electrónico rechazada fue '(e-mail address removed)'.
Asunto 'Prueba', Cuenta: 'Ubbi', Servidor: 'smtp.ubbi.com', Protocolo: SMTP,
Respuesta del servidor: '553 sorry, that domain isn't in my list of allowed
rcpthosts. Relay denied for ip: 200.127.248.179 (#5.7.1)', Puerto: 25,
Seguridad (SSL): No, Error de servidor: 553, Número de error: 0x800CCC79

Could somebody help me, please?

Regards

 

[Gary VanderMolen]

It appears that were connecting from prima.net.ar
at the time you tried to use the smtp.ubbi.com server.
Port 25 SMTP is permitted only from a network connection
that is owned by the same entity as the owner of the SMTP server.

There are four possible workarounds:
1. Use webmail for sending while traveling.
2. Use a port other than '25' for SMTP, if your mail provider has a
provision for that. Typical alternate ports are 587 and 465.
3. Get a free Gmail account, configure it for POP access, and
use it for your away-from-home sending chores.
4. Use the SMTP server belonging to your current connection.