Phisher scam pointing to fake webmail site

Messages titled "Urgent Network Failure" or "Office of Information and Technology" are telling users to login to retrieve queued mail and "reactivate service", but actually point to a fake webmail website. Mousing over the link without clicking will reveal that the link actually points to a non-Caltech website. The fake website is blocked from campus, but off-campus recipients may still be able to reach it until it is taken down.