There might be the case that students' mail(KUMOI) won't be available with the mail application of Mac OS X
publication date :
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).