University of Cambridge Computer Laboratory - Problem affecting DNS for cl.cam.ac.uk, cst.cam.ac.uk – Incident details

All systems operational

Problem affecting DNS for cl.cam.ac.uk, cst.cam.ac.uk

Resolved
Partial outage
Started 5 days agoLasted about 3 hours

Affected

External Services

Partial outage from 12:32 PM to 3:05 PM

Updates
  • Resolved
    UTC
    Resolved

    All services should now be available again.

    A fault with our primary authoritative DNS server (causing our primary and most of our secondary DNS servers to be unable to serve our DNS zones) has been rectified. Most of our authoritative DNS servers are now operational. Two third-party secondary servers are not, due to a possible configuration issue, and we have contacted the operator - though we suspect that this may resolve itself within an hour. However we have sufficient DNS servers that this partial outage should not cause any noticeable problems.

  • Investigating
    UTC
    Investigating

    We are currently investigating a problem with DNS for cl.cam.ac.uk and cst.cam.ac.uk, which may cause some external users to be unable to connect to departmental systems.