The new security certificates are now on our mail server.
1) For information about how to configure Thunderbird to use this see:
http://www.math.toronto.edu/cms/thunderbird-setup/
2) If you are already using Thunderbird then you can make two minor changes which are described here:
http://www.math.toronto.edu/cms/tweaking-thunderbird-for-new-certificates/
(you may have to re-enter your passwords for the incoming and outgoing mail servers since their names have changed).
3) If you use webmail be sure to use:
https://mail.math.toronto.edu/
4) For Mac Mail users the minor changes are the same as for Thunderbird described at the link above: you need to use mail.math.toronto.edu as the incoming mail server and smtp.math.toronto.edu as the outgoing mail server.
