> I have a windows server (MS 2003) and I pointed to a RHN 5.5 linux email
> server to send emails if datavault backups fail.
> connection in command prompt using telnet hostip 25 and it did connect.
> However through the GUI it fails using a test button.
> I researched this and couldn't find a solution. can I have some hints
It sounds like the server you're attempting to send through does not
recognise 'hello.com' as a final destination that it handles and so would
need some form of authentication (username, password) in order to relay
Who owns/runs the email server ?
The telnet test just proved the server is reachable, not that it will
relay any and all messages.