About 5-6 years ago, I purchased a domain name and email addresses through a bundled package.  Looks like Melbourne IT ended up doing the hosting, and I used the old hotmail interface, now Outlook.com, to access emails sent to the addresses on my personal domain.

For several days now, I've been unable to receive emails sent to addresses on my personal domain.  Melbourne IT says the issue is due to some decommissioned servers, and has suggested that I need to make some configuration changes in their domain maintenance tool.

One of the pieces of information that I need is the MX record for the email addresses on the domain.  Melbourne IT says I need to get this from Microsoft.  Hoping that someone can help me track down this information.