A trojan is currently circulating the McGill email system.
If you receive an email that resembles the following:
From: greetingcard.org [klari.de.jonge [at] hetnet.nl]
Subject: You've received a greeting card.
To protect your computer, ensure you are running McGill's antivirus software (free from McGill's Software Licensing website) and that you have installed the latest security updates. Find more on Best practices against IT vulnerabilities and threats in the IT Knowledge Base.
If you need additional information, contact the ICS Service Desk.