All - For the past several hours there have been delays in the processing of list email. The reason for this is a huge flood in the number of incoming messages to the system. The flood was so signficiant that it may well have been the product of a coordinated attack of some kind, although I have no way to directly prove that. Our mail queue normally has a delivery backlog of about 1,000 messages - representing, over a 24-hour period, the number of messages that were not immediately deliverable by our system. The bulk of these are generally responses by postconfirm asking for confirmation from addresses that were forged (i.e., postconfirm doing its job.) This morning we had a queue level of 16,500 messages, growing at the rate of 100 additional messages every minute. It didn't take long to find the common thread among these messages and block the problem. There will continue to be delays as the rest of our queue flushes out normally. I will continue to monitor the situation and adjust it throughout the next 12 hours to ensure that things continue to flow smoothly. Thank you for your patience. Glen Barney IT Director AMS (IETF Secretariat) _______________________________________________ IETF-Announce mailing list IETF-Announce@ietf.org https://www.ietf.org/mailman/listinfo/ietf-announce
