Due to a small number of York community members responding to a fraudulent
email request for email account login information:

http://uit.news.yorku.ca/2011/11/18/latest-phishing-message-sent-friday-november-18-1138am-please-ignore/

some companies/email providers emails are rejecting email received from
@yorku.ca addresses as possible SPAM.

UIT is taking measures to resolve this issue as quickly as possible.