Hmmm. Would have thought turning off a nanog subscription would be considered on the list of things to do when closing an email account. auto-responder@nsf.gov wrote:

Your message to the National Science Foundation is being returned to you because the address (sgoldste) is no longer valid. A copy of your message is attached.

The person you addressed is no longer at the Foundation, and the Postmaster has no forwarding information. For more information, please call our Information Center at 703-292-5111, or by email at: info@nsf.gov.

-- -Jack