There is a trouble that you can't connect to students' mail(KUMOI) with the exchange connection from the mail application of Mac from June,2015.

There might be the case that recieving mails with IMAP/POP or transmittting mails with SMTP will be available.

In case you can't connect, please use from https://mail.st.kyoto-u.ac.jp or use another mail software(Thunderbird etc).

You can't connect to Exchangfe Online with the mail client of Mac OS X using the Office365 single-sign on environment of Shibboleth(2015/6/24)