Current Status

Currently no DNS Disruption

Resolution Statement

Actions and Root Causes

There continue to be random delays in DNS response and in some cases DNS resolution. Note that the windows are usually a few minutes, and the attacks are short but effective in duration, and sometime they are frequent and one after another.Since Thursday, we have had to take actions overnight and during the day to prevent DNS interruptions.

Corrective and Preventative Measures

Can you log the inbound DNS queries (i.e. on MS DNS), to see where the queries are coming from. Is there any way to check and see if the MX queries to MS DNS servers are initiated from one of the email servers.

Affected Services

• DNS

Event Updates

An incident with DNS is causing service disruptions for some customers

September 4, 2019 , 10:45 PM

A security incident with DNS services is causing disrptions for some UH customers. IT Analysts are investigating at this time. There is currently no estimated time to resolution.

Campus DNS performance Investigation Continues

September 6, 2019 , 6:00 AM

Network activity contributing to our poor DNS performance is being monitored and evaluated while systems solutions are under development.

Currently no DNS Disruption

September 21, 2019 , 4:00 PM

The recursive DNS attacks levels were minimal from 9/13/2019 (Friday) to 9/19/2019 (Thursday).