Classic ASP - Website Emails using Office 365

Hi,

I am trying to send emails from my Classic ASP website.
We have recently upgraded our emails to Microsoft Office 365 and now I have to update my website to get the emails to send again.

I have the following code:

set objMessage = createobject("cdo.message")
set objConfig = createobject("cdo.configuration")
Set Flds = objConfig.Fields

Flds.Item("http://schemas.microsoft.com/cdo/configuration/sendusing") = 2
Flds.Item("http://schemas.microsoft.com/cdo/configuration/smtpserver") ="outlook.office365.com"

' ' Passing SMTP authentication
Flds.Item ("http://schemas.microsoft.com/cdo/configuration/smtpauthenticate") = 1 'basic (clear-text) authentication
Flds.Item ("http://schemas.microsoft.com/cdo/configuration/sendusername") ="[email protected]"
Flds.Item ("http://schemas.microsoft.com/cdo/configuration/sendpassword") ="password"

Flds.update
Set objMessage.Configuration = objConfig
objMessage.To = "[email protected]"
objMessage.From = "[email protected]"
objMessage.Subject = "New Task"
objMessage.fields.update
objMessage.HTMLBody = "This is a test sent from CDO using smtp authentication."
objMessage.Send

response.Redirect ("test-emails.asp?complete=1")
response.end

The generates a generic error:

error '8004020e'
/administration/mobile/test-emails.asp, line 31 (in bold above)

I am not sure of the correct settings and can't seem to find them anywhere, any help would be greatly received!

Thanks in advance.