Due to the appearance of a standard-issue DNS entry for elsie.nci.nih.gov (which trumps the mail exchange--MX--entry that's the only one there should be), mail to tz@elsie.nci.nih.gov has been getting dropped since February 21. I'm working on resolving the problem; in the meantime, please send time zone mail to olsona@mail.nih.gov, an address that still works. I'll forward the mail in a way that avoids the DNS problem. My apologies for the inconvenience. --ado