Having recently rebranded our site and simultaneously migrated our mail from gmail to outlook, I am now trying to send auto-emails using the outlook SMTP host with our new custom domain name. These are the email settings I have in my backend- the email host as smtp.live.com the email port as either 587 or 25 and the TLS set to True. However I am having no success.   

I'm guessing that there is something I still need to do within the Outlook web app, but i'm not sure.
I am getting Error 3204 0x8DE20003, cannot send or receive.

This seems to be a very common issue, yet no publically available solutions, meaning some backend server settings, so a post stating that you need to contact support and ask your own question to get it fixed would be helpful for people looking for a resolution.

 

Running 64-bit Windows 7...the problem just inexplicably starts.  I've run the repair function from the Programs menu in the Control Panel, logged out/logged in, etc.