e: Sat, 18 Aug 2012 08:32:09 -0400 Final-Recipient: RFC822; X-Actual-Recipient: RFC822; Action: delayed Status: 4.4.3 Diagnostic-Code: SMTP; 451 4.4.3 Remote server unavailable Last-Attempt-Date: Sat, 18 Aug 2012 12:39:46 -0400 Will-Retry-Until: Mon, 20 Aug 2012 08:32:09 -0400 Final-Recipient: RFC822;

8.59.28.1701 Host malanga.cc.columbia.edu reports the errors below Transcript of session follows while talking to localhost: >>> DATA «< 451 4.4.3 Remote server unavailable unavailable < Warning: message still undelivered after 4 hours Will keep trying until message is 2 days old >... Deferred: 451