Event Viewer
Error, Source: Schannel, and Event ID: 36887
If the exchange 2010 has the certificate mail.test.com and you access the owa from firefox as https://mail/owa, the Event ID:36887 will be recorded.
Error, Source:Schannel, and Event ID: 36888
If the exchange 2010 has the certificate mail.test.com and you access the owa as http://mail.test.com:443/owa, the Event ID: 36888 will be recorded.