in the next couple of days our update server infrastructure will undergo some maintenance which includes an update of the operating system. Due to this you or your customers might notice one or another warning in the Dashboard / log files alerting that an update server was not reachable.
This will NOT have an impact on retrieving updates. Since the infrastructure is designed in a redundant way the next update will talk to a different server and customers will retrieve the updates as expected.
I will tryto reduce the impact by removing servers from DNS or the list of update servers we ship to the products, however due to DNS caching etc. we have seen in the past that from time to time MWG keeps talking to an update server which has been removed from the redundancy completely.
Feel free to contact me in case of any questions, concerns or problems.