https://social.technet.microsoft.com/Forums/exchange/en-US/c3d1803f-cf4d-473b-b865-952c1dd6af6e/exchange-2010-activesync-broken-how-to-fix?forum=exchange2010

https://technet.microsoft.com/en-us/library/aa996916(v=exchg.160).aspx
ActiveSync Fails with “Testing of the OPTIONS command failed.”

https://community.spiceworks.com/topic/592789-activesync-fails-with-testing-of-the-options-command-failed

https://technet.microsoft.com/en-us/library/0715cdea-acfa-4c0f-88da-16fde67ac3e6.aspx

http://exchangeserverpro.com/test-activesync-mobile-phone/
https://testconnectivity.microsoft.com

owa

Error message when you try to log on to Exchange 2007 by using Outlook Web Access: “440 Login Timeout”
https://support.microsoft.com/en-us/kb/941201
“HTTP Error 404 – File or Directory not found” error message when you request dynamic content with IIS 6.0

https://support.microsoft.com/en-us/kb/315122

https://social.technet.microsoft.com/Forums/exchange/en-US/83c3c24a-82c5-4afc-bf8b-9bd09ea9fedf/http-error-404-while-trying-to-access-owa?forum=exchangesvrclientslegacy

https://technet.microsoft.com/en-us/library/bb123752(v=exchg.141).aspx

ASP

https://technet.microsoft.com/en-us/library/dd577061(v=exchg.80).aspx