Email problem

[tangowebs]

Hi, Im using plesk 7 for windows...
Im not receiving or sending emails from the accounts.

Can anybody help me???

The error is:

This message was created automatically by mail delivery software.

A message that you sent could not be delivered to one or more of its
recipients. This is a permanent error. The following address(es) failed:

santiago@imagendelibres.com.ar
unrouteable mail domain "imagendelibres.com.ar"

This is the new error:
MailEnable: Message could not be delivered to some recipients.
The following recipient(s) could not be reached:

[SMTP:clara@tangowebs.com]: Remote SMTP Server Returned: 550-Verification failed for <santiago@imagendelibres.com.ar>

550-unrouteable mail domain "imagendelibres.com.ar"

550 Sender verify failed

 

[shortcut]

Make sure you can resolve imagendelibres.com.ar with your nameservers.

if imagendelibres.com.ar is on your server, make sure its not the hostname, e.g.try changing your hostname to something other than imagendelibres.com.ar