Setting up MS Outlook using OWA credentials

According to your post, you are using three different usernames with your Exchange account. That might not be wrong, but it is darned sure confusing.

If your domain/username is MYWORK\ABADSLEETD1, when please explain why you are messing around with those other two usernames.

 

Account confusion aside, Outlook on a Mac requires Exchange 2010 in order to connect. Can you confirm that the server meets that requirement?

 

That's not your Exchange server. The OWA URL is something else entirely.

Are you on their network? If not, the internal address won't work either. If you're not on their network you need to confirm that the Exchange server is externally accessible to Outlook.

Your domain & ID can differ from the OWA ID that you use. In some environments they're the same but not all Exchange environments are identical which is why the details are critical if you're asking for assistance.

http://www.microsoft.com/mac/outlook/system-requirements

 

Hmm, here at work we've always said the mailbox has to be on Exchange 2010 for compatibility with a Mac. Maybe that's because the company had no plans to do an intermediate step from 2003 to 2007, they just went to 2010.

But wait! The part you quote is in a section labeled "Additional services required to use some features". So, something needs to be done on the server to allow Mac clients running Office 2011 to connect to the mail server. So unless the administrator has consciously completed the additional tasks, my statement stands but with some adjustments.

Outlook 2011 on a Mac requires Exchange 2010 in order to connect with no additional work required by the admin.

As noted by others, there are other prerequisites besides server version to allow for connection as you're trying to do.