IMAP settings to Outlook custom domain?

Hi,

I've just recently setup an Outlook custom domain/email with Domains.Live (southernservices.com.au).

I'm in the process of trying to configure Outlook 2011 (mac version) with this email, using IMAP.

I am using the correct IMAP settings, however when trying to send an email I get the following error:

Can I please have some help with 'authentication the user' so that I am able to send?

Further Info:

* I can receive emails fine, just sending.

* Outlook 2011 does connect securely to smtp-mail.outlook.com, just wont send.

* IMAP settings I am using are:

Question about Outlook Express