Do you need to change your coxeter (and hence mail) password?
Due to the recent Heartbleed bug <http://main.its.utoronto.ca/news/heartbleed-notice/> we recommend that you change your coxeter password. Simply type passwd on coxeter and follow the instructions.
If you are completely certain that you have never typed your coxeter password into a website (that includes departmental websites such as mail, since it is possible that website protections were compromised) and if you never typed your password into pine then as long as you do not use your coxeter password on any other sites/machines then you would not need to change your password.