Question : 550 relaying mail to mydomain.com.au is not allowed

I have a client who travels a bit over seas.

whilst in Australia he can send email find using outlook express on xp.

Once he goes overseas and tries to send email he always gets an error message of...

Your message did not reach some or all of the intended recipients.

      Subject:      RE:
      Sent:      3/09/2009 7:29 PM

The following recipient(s) cannot be reached:

      'person name' on 3/09/2009 7:29 PM
            550 relaying mail to mydomain.com.au is not allowed

the outgoing server is mail.mydomain.com.au

we have the outgoing server set to "My outgoing server (SMTP) requires authentication with "user same settings as incoming mail server.


But we still get the 550 relaying mail to mydomain.com.au is not allowed

Any ideas would be appreciated.

Ive offered webmail to the client, but they are unsatisfied with this option.

Answer : 550 relaying mail to mydomain.com.au is not allowed

That is always a distinct possibility - I should have thought of that one :-(

Run through the article and setup port 587 and then get your client to change the settings in Outlook Express to use port 587 and then he should be okay.

http://support.microsoft.com/kb/262658 - to change the port numbers in OE.