ISSUE:  Dyn DNS Service Provider has DOS Attack

We are seeing widespread DNS issues with some major internet services and sites.  This may be related to a DNS attack at Dyn DNS which handles DNS for many companies.

DNS is critical to both email and web application performance.   If your server cannot find a DNS address, the system may perform poorly while the DNS request reaches the timeout. 

There is nothing you can do about 3rd party DNS issues. 

If your own operations are on Dyn, then your sites and email may be directly impacted.   We recommend you contact Dyn for more information.

We have seen impacts on:

Github

Charter Customers

Twitter

Dyn Customers

Basically any application using Dyn or linking their applications to a site that uses Dyn could see potential impacts. 

Reference: https://www.dynstatus.com/incidents/nlr4yrr162t8