Begin 2021-02-21 07:10:00
End 2021-02-23 14:30:00
Affected everyone trying to access something in from off-campus.

The central DNS servers for for external requests had problems, because they received too many requests, which resulted in and others not being found. DNS names within then will not resolve to an IP address. We enlarged some TTLs (Time-To+lives) to try to lessen the problem. These small TTLs were meant to be able to move a service to a new server in case of problems, but now they just make the problem bigger. After starting VPN you won’t notice this problem, because the internal DNS servers that you use then are not affected. Changes to the RU DNS servers hopefully lessened or removed the problems as of 2021-02-23 14:30.