UPDATE
[2009-05-28 09:11:37 | Fred A Archibald]
A server that was down for maintenance was accidentally restarted causing the issue. We regret any inconvenience this may have caused.
Resolved as of 2009-05-28 08:05:00
There is an LDAP problem that is affecting some services including sending mail through gateway.eecs . Staff are working to correct the problem.