Outlook.com webmail service has a nice feature - it highlights potentially incorrect e-mail addresses in the "To" field. But what happens if we try to use some obscure subdomains? Well, it looks like the auto-correct feature works just as well for Microsoft's internal subdomains:
As you can see both citrix.corp.microsoft.com and aol.corp.microsoft.com are recognized as valid e-mail addresses, however blabla.corp.microsoft.com is considered an invalid one. Here are some of the subdomains that auto-corrector recognizes as valid ones are:
google.corp.microsoft.com
rally.corp.microsoft.com
citrix.corp.microsoft.com
vmware.corp.microsoft.com
aol.corp.microsoft.com
cirrus.corp.microsoft.com
cisco.corp.microsoft.com
bluephoenix.corp.microsoft.com
twitter.corp.microsoft.com
qualys.corp.microsoft.com
blizzard.corp.microsoft.com
alliance.corp.microsoft.com
amber.corp.microsoft.com
api.corp.microsoft.com
apple.corp.microsoft.com
arm.corp.microsoft.com
ascent.corp.microsoft.com
asml.corp.microsoft.com
aspen.corp.microsoft.com
axt.corp.microsoft.com
blackbox.corp.microsoft.com
cabot.corp.microsoft.com
caci.corp.microsoft.com
cai.corp.microsoft.com
carbonite.corp.microsoft.com
cavium.corp.microsoft.com